Proportions

Front

What is a proportion?

Back

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

Front

How do you solve for x in a proportion?

Back

Cross-multiply the two ratios and then solve for x.

Front

If 48 tests can be graded in 1 minute, how many tests can be graded in 6.25 minutes?

Back

300 tests.

Front

If a hamburger costs $6 for 3 pounds, how much does it cost per pound?

Back

$2 per pound.

Front

If two figures are similar, what does that mean?

Back

It means that their corresponding angles are equal and their corresponding sides are in proportion.

Front

What is the formula for finding a missing side in similar figures?

Back

(Side1/Side2) = (MissingSide1/MissingSide2).

Front

If x/5 = 2/10, what is the value of x?

Back

x = 1.

Front

How do you find the total cost when buying in bulk?

Back

Multiply the unit price by the total quantity.

Front

If a recipe requires 2 cups of flour for 4 servings, how much flour is needed for 10 servings?

Back

5 cups of flour.

Front

What is the relationship between ratios and proportions?

Back

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