Proportion Review

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio between two quantities that remain constant as the quantities change. It is often represented as 'k' in the equation y = kx.

Front

If it costs $4.00 to rent a scooter for 1/4 hour, how much does it cost for 1 hour?

Back

$16.00

Front

If 24 star fruit cost $47.60, how much does 1 star fruit cost?

Back

$1.99

Front

What is the ratio of boys to girls if there are 4 boys for every 6 girls?

Back

The ratio is 4:6, which can be simplified to 2:3.

Front

If there are 18,000 total students and the ratio of boys to girls is 4:6, how many boys are there?

Back

7,200 boys.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

If the ratio of Marvel fans to DC fans is 5:4 and there are 85 Marvel fans, how many DC fans are there?

Back

68 DC fans.

Front

How do you find the unit rate from a ratio?

Back

To find the unit rate, divide both quantities in the ratio by the same number to simplify it to a ratio of 1.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.