Finding the Fourth Proportional to 239.92, 331.08 and 146.74
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Solution
The fourth proportional to 239.92, 331.08 and 146.74 is: 202.50
Step by Step Solution
- Step 1: Write the proportion equation
239.92 : 331.08 = 146.74 : x - Step 2: Convert to fraction form
239.92/331.08 = 146.74/x - Step 3: Cross multiply
239.92x = 331.08 × 146.74 - Step 4: Simplify right side
239.92x = 48,582.68 - Step 5: Solve for x
x = 48,582.68/239.92 - Step 6: Final answer
x = 202.50
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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.