Ratio and Proportion

• k=5

• k=3.3333333

• k=60

• k=90

Solve the proportion.

• x = 4

• x = 5

• x = 7.2

• x = 0.2

What is the missing number in the ratio table?

• 72

• 85

• 76

• 90

Another kind of ratio relationship you can find is to look inside a ratio itself. 2:6 is the top ratio in this table.

To get from 2 to 6, you would multiply by 3. Look at each row and notice that this times 3 relationship continues.

What is the value of x?

• 30

• 3

• 15

• 20

The cafeteria orders a ratio of 4 to 7 of hot dogs to hamburgers for lunch. Which ratios are equivalent to the ratio of hot dogs to hamburgers? READ CAREFULLY!

• 16 hamburgers and 28 hot dogs

• 8 hot dogs and 14 hamburgers

• 7 hot dogs and 10 hamburgers

• 20 hamburgers and 35 hot dogs

• 28 hot dogs and 49 hamburgers

Solve for x 

• x = 15

• x = 11

• x = 1/11

• x = 20

• c = 4

• c = 8

• c = 14

• c = 10

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Solving Proportions

Find THREE equivalent ratios for 4/5. Select all that apply.

• 5:4

• 12:15

• 5 to 4

• 40 to 50

Find the missing values in the ratio table. 

• 35, 12

• 14, 100

• 15, 30

• cannot be determined

Juliet used a 3 to 1 ratio of white to black paint in order to make a shade of gray. Which of the following ratios would give her the same shade of gray? Pick two.

• 5 to 4

• 5 to 15

• 12 :4

• 7 to 6