Proportional or Nonproportional?
Determine if the ratios form a proportion:
2:3 and 6:9
Yes!
Solve:
u/72 = 2/4
u=36
Find the length of the object on a scale drawing given the actual length and the scale:
a car 16 feet long; scale: 1 in = 6 inches
32 inches
Write the percent as a fraction in simplest form:
52.5%
21/40
Write the fraction as a percent. Round to the nearest tenth if necessary:
7/10
70%
Determine if the ratios form a proportion:
3:1 and 15:6
No
Solve:
12/m = 15/10
m=8
Find the length of the object on a scale drawing given the actual length and the scale:
A lake 85 feet across; scale: 1 inch = 4 feet
21.25 inches
Write the percent as a fraction in simplest form:
31 1/4%
5/16
Write the fraction as a percent. Round to the nearest tenth if necessary:
14/25
56%
Determine if the ratios form a proportion:
2/1 and 8/3
No
Solve:
4/5 = x/3
x= 2.4
Find the length of the object on a scale drawing given the actual length and the scale:
A flag 5 feet wide; scale: 2 inches = 1 foot
10 inches
Write the percent as a fraction in simplest form:
18 3/4%
3/16
Write the fraction as a percent. Round to the nearest tenth if necessary:
8/9
88.9%
Determine if the ratios form a proportion:
6/14 and 9/21
Yes! 3/7
Solve:
45/75 = j/3
j=1.8
Find the actual length of the object given the scale drawing length and the scale:
A parking lot displayed in a drawing 8 centimeters wide; scale: 1 cm = 25 m
200 meters
Write the percent as a fraction in simplest form:
21 1/4%
17/80
Write the fraction as a percent. Round to the nearest tenth if necessary:
1/16
6.25%
Determine if the ratios form a proportion:
$2.48/4 and $3.72/6
Yes
Solve:
125/v = 20/5
v = 31.25
A model of a skyscraper is made using a scale of 1 inch = 75 feet. What is the height of the actual building if the height of the model is 19.4 inches?
1,455 feet
7.5%
3/40
Write the fraction as a percent. Round to the nearest tenth if necessary:
1/250
0.4% or 2/5%