Finding the Fourth Proportional to 239.92, 331.09 and 135.01
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Solution
The fourth proportional to 239.92, 331.09 and 135.01 is: 186.31
Step by Step Solution
- Step 1: Write the proportion equation
239.92 : 331.09 = 135.01 : x - Step 2: Convert to fraction form
239.92/331.09 = 135.01/x - Step 3: Cross multiply
239.92x = 331.09 × 135.01 - Step 4: Simplify right side
239.92x = 44,699.80 - Step 5: Solve for x
x = 44,699.80/239.92 - Step 6: Final answer
x = 186.31
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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.