Finding the Fourth Proportional to 239.97, 331.19 and 135.08
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Solution
The fourth proportional to 239.97, 331.19 and 135.08 is: 186.43
Step by Step Solution
- Step 1: Write the proportion equation
239.97 : 331.19 = 135.08 : x - Step 2: Convert to fraction form
239.97/331.19 = 135.08/x - Step 3: Cross multiply
239.97x = 331.19 × 135.08 - Step 4: Simplify right side
239.97x = 44,737.15 - Step 5: Solve for x
x = 44,737.15/239.97 - Step 6: Final answer
x = 186.43
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.