Question 42:
Find the fourth proportional to 8.6, 10.75, and 6.
Options :
- a) 7.5
- b) 7
- c) 7.2
- d) 7.25
correct answer : a)
Explanation :
Fourth proportional x satisfies: 8.6 / 10.75 = 6 / x.
x = (10.75 × 6) / 8.6 = 64.5 / 8.6 = 7.5.
Question 42:
Find the fourth proportional to 8.6, 10.75, and 6.
Options :
correct answer : a)
Explanation :
Fourth proportional x satisfies: 8.6 / 10.75 = 6 / x.
x = (10.75 × 6) / 8.6 = 64.5 / 8.6 = 7.5.