Finding the Fourth Proportional to 239.25, 358.88 and 76.95
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Solution
The fourth proportional to 239.25, 358.88 and 76.95 is: 115.42
Step by Step Solution
- Step 1: Write the proportion equation
239.25 : 358.88 = 76.95 : x - Step 2: Convert to fraction form
239.25/358.88 = 76.95/x - Step 3: Cross multiply
239.25x = 358.88 × 76.95 - Step 4: Simplify right side
239.25x = 27,614.09 - Step 5: Solve for x
x = 27,614.09/239.25 - Step 6: Final answer
x = 115.42
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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.