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Math Word Problems - GED, PSAT, SAT, ACT, GRE Preparation
7.8 Proportion - II

If a/b = c/d, then a, b, c, and d are called the first, second, third, and fourth terms of a proportion respectively. The first and fourth terms in a proportion i.e., a and d are called "extremes" and the second and third terms i.e., b and c are called "means".

Example: Find the extremes and means in 2:5 = 10:25.
In the above proportion, the extremes are 2 and 25, and the means are 5 and 10.


Directions: Answer the following questions. Also write at least ten examples of your own.
Q 1: What are the extremes in 5:2 = 25:10?
2 and 25
5 and 10

Q 2: What are the means in 25:30 = 250:300?
25 and 300
30 and 250

Q 3: What are the means in 4:6 = 200:300?
4 and 300
6 and 200

Q 4: What are the means in 6:8 = 300:400?
6 and 400
8 and 300

Q 5: What are the extremes in 10:75 = 50:75 ?
10 and 75
15 and 50

Q 6: What are the extremes in 10:30 = 100:300?
30 and 100
10 and 300

Q 7: What are the extremes in 1:5 = 18:90?
1 and 90
5 and 18

Q 8: What are the extremes in 1:5 = 5:25?
1 and 25
5 and 5

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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