7.4D Proportions (WGU and Converting) Knowledge Check

Front

What is a proportion?

Back

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

Front

How do you convert kilograms to pounds?

Back

Multiply the weight in kilograms by 2.2 to get the weight in pounds.

Front

If a car completes 5 laps in 12 minutes, how do you find the time for 7 laps?

Back

Set up a proportion: 5 laps/12 minutes = 7 laps/x minutes, then solve for x.

Front

What is the ratio of girls to boys if there are 4 girls for every 7 boys?

Back

The ratio is 4:7.

Front

How do you calculate the average speed of a trip?

Back

Average speed = total distance traveled / total time taken.

Front

If Hallie lost 1.44 kilograms, how do you convert that to pounds?

Back

Multiply 1.44 kg by 2.2 to find the weight in pounds.

Front

What is the formula to find the missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

How do you round a number to the nearest whole number?

Back

Look at the digit to the right of the target place; if it's 5 or more, round up.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

If a class has 16 girls and the ratio of girls to boys is 4:7, how many boys are there?

Back

There are 28 boys in the class.