PROPORTIONS - WORD PROBLEMS

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you set up a proportion for a word problem?

Back

Identify the two ratios involved in the problem and set them equal to each other.

Front

If a bird flies 35 meters in 10 seconds, what is its speed in meters per second?

Back

The speed is 3.5 meters per second (35 meters / 10 seconds).

Front

If Will spent $3.75 for 3 pounds of granola, how much does he pay per pound?

Back

He pays $1.25 per pound ($3.75 / 3 pounds).

Front

How do you find the missing value in a proportion?

Back

Cross-multiply the known values and solve for the unknown.

Front

What is the formula to find the new height when enlarging a painting?

Back

Front

If a car travels 420 miles in 8 hours, what is its speed in miles per hour?

Back

The speed is 52.5 miles per hour (420 miles / 8 hours).

Front

How do you determine how far a car will travel at a constant speed?

Back

Multiply the speed by the time traveled.

Front

What is the relationship between distance, rate, and time?

Back

Distance = Rate × Time.

Front

If Emily's painting is enlarged from 3 inches to 15 inches in width, what is the scale factor?

Back

The scale factor is 5 (15 inches / 3 inches).