Ratios, Proportions, Geometric Mean

What is a Ratio?

• Is a comparison of two quantities 
• To multiply two fractions 
• A number over another number
• Two decimals that can be multiplied

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

What is the ratio to the picture shown, triangles to squares?

• 2:6
• 5:6
• 3:4
• 4:3

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

If there are 5 soccer players, 10 baseball players, and 15 basketball players, what is the ratio of baseball players to soccer players?

• 1 to 2
• 1 to 3
• 2 to 1
• 3 to 1

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Tags

CCSS.7.RP.A.2B

Solve the proportion.

• q=2
• q=9
• q=4.5
• q=6

Tags

CCSS.7.RP.A.2B

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

Find the geometric mean of 12 and 27

• 18
• 20
• 19.5
• 13.5

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the ratio in simplest form of the width to the length.

• 6:10
• 3 to 5
• 60
• 12/20

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

The perimeter of a rectangle in 154 ft. The ratio of length to width is 10:1. Find the length and width.

• l=140
  w=14
• l=70
  w=7
• l=7
  w=70
• l=14
  w=140

Tags

CCSS.8.EE.C.7B

Solve the proportion.
(The middle C should be a B)

• 6
• 12
• 7
• 3

Tags

CCSS.HSG.SRT.B.4