Finding the Fourth Proportional to 239.91, 331.10 and 135.02
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Solution
The fourth proportional to 239.91, 331.10 and 135.02 is: 186.34
Step by Step Solution
- Step 1: Write the proportion equation
239.91 : 331.10 = 135.02 : x - Step 2: Convert to fraction form
239.91/331.10 = 135.02/x - Step 3: Cross multiply
239.91x = 331.10 × 135.02 - Step 4: Simplify right side
239.91x = 44,704.54 - Step 5: Solve for x
x = 44,704.54/239.91 - Step 6: Final answer
x = 186.34
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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.