Understanding Proportional Ratios

This video tutorial explains how to determine if ratios are proportional by using tables. It begins with an introduction to ratios and common mistakes, followed by examples using basketball game data. The tutorial demonstrates how to check if ratios are proportional by finding a common multiplier. It concludes with a summary of the lesson.

What is a common mistake people make when comparing ratios?

• Subtracting the numbers within the ratios

• Adding the numbers within the ratios

• Ignoring the numbers within the ratios

• Dividing the numbers within the ratios

How can you determine if David's point ratios are proportional?

• By checking if the same number multiplies both the points and minutes

• By adding the points and minutes

• By subtracting the points from the minutes

• By dividing the points by the minutes

What multiplier shows that David's ratios are proportional?

• 5

• 2

• 4

• 3

Why are Vincent's ratios not proportional?

• Because 2 times 3 equals 6, but 5 times 3 does not equal 15

• Because 2 times 5 equals 10, but 8 times 5 does not equal 40

• Because 2 times 4 equals 8, but 5 times 4 does not equal 10

• Because 2 times 2 equals 4, but 5 times 2 does not equal 10

What is the correct way to check if two ratios are proportional?

• By multiplying the numerators and denominators by the same number

• By dividing the numerators by the denominators

• By adding the numerators and denominators

• By subtracting the numerators from the denominators

What is the main lesson learned about ratios in this video?

• Ratios are always equal

• Ratios are not useful in real life

• Ratios can be compared by adding them

• Ratios are proportional if the same multiplier applies to both parts

Which of the following is an example of a proportional ratio?

• 2 to 5 and 4 to 10

• 7 to 9 and 14 to 20

• 5 to 6 and 10 to 12

• 3 to 4 and 6 to 8