Question : What is the fourth proportional to 189, 273, and 153?
Option 1: 117
Option 2: 299
Option 3: 221
Option 4: 187
Answer (1)
5th Jan, 2024
Correct Answer: 221
Solution :
Let the fourth proportional be $a$.
According to the question,
⇒ $189:273=153:a$
⇒ $a=\frac{273×153}{189}$
⇒ $a=221$
Hence, the correct answer is 221.
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