Finding the Fourth Proportional to 239.24, 358.87 and 129.64
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Solution
The fourth proportional to 239.24, 358.87 and 129.64 is: 194.47
Step by Step Solution
- Step 1: Write the proportion equation
239.24 : 358.87 = 129.64 : x - Step 2: Convert to fraction form
239.24/358.87 = 129.64/x - Step 3: Cross multiply
239.24x = 358.87 × 129.64 - Step 4: Simplify right side
239.24x = 46,523.91 - Step 5: Solve for x
x = 46,523.91/239.24 - Step 6: Final answer
x = 194.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.