Finding the Fourth Proportional to 239.18, 329.96 and 135.68
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Solution
The fourth proportional to 239.18, 329.96 and 135.68 is: 187.18
Step by Step Solution
- Step 1: Write the proportion equation
239.18 : 329.96 = 135.68 : x - Step 2: Convert to fraction form
239.18/329.96 = 135.68/x - Step 3: Cross multiply
239.18x = 329.96 × 135.68 - Step 4: Simplify right side
239.18x = 44,768.97 - Step 5: Solve for x
x = 44,768.97/239.18 - Step 6: Final answer
x = 187.18
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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.