Find the fourth proportional of 144, 192, and 216.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 288.
Concept:
a/b = c/d
Where d is the fourth proportion.
Calculations:
Let the fourth proportion be x.
Here, a = 144, b = 192, c = 216, and d = x
Now, on putting the given values
⇒ 144/192 = 216/x
⇒ 72/96 = 216/x
⇒ x = (216 × 96)/72
⇒ x = 288