Ratios and Proportions

The ratio of the measures of the three angles in a triangle is 10:3:7. Find the measure of the largest angle.

• 60 degrees

• 100 degrees

• 80 degrees

• 90 degrees

• 7.50

• 6.75

• 8.00

• 5.25

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

Solve the proportion.

• q=2

• q=9

• q=4.5

• q=6

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk

• 1.75 cups milk

• 2 cups flour

• 2.25 cups milk

Solve for b 

• 8

• 17/12

• 4/3

• 1/8

Write a proportion to find how many points a student needs to score on a test in order to get the given percent:
The test is worth 12 points.
The test score is 75%.

• p/12=100/75

• p/100=12/75

• p/12=75/100

• p/75=12/100

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs.  Write and solve a proportion to find the number c of cats.

• c=15

• c=18

• c=21

• c=16

Solve the proportion.

• -3 or -4

• 3 or 4

• -3 or 4

• 3 or -4

In similar Polygons, corresponding sides are ___ and corresponding angles are ___. (Fill in the blanks)

• congruent, proportional 

• proportional, congruent 

• congruent, congruent

• proportional, proportional