Finding the Fourth Proportional to 239.38, 358.98 and 76.99
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Solution
The fourth proportional to 239.38, 358.98 and 76.99 is: 115.46
Step by Step Solution
- Step 1: Write the proportion equation
239.38 : 358.98 = 76.99 : x - Step 2: Convert to fraction form
239.38/358.98 = 76.99/x - Step 3: Cross multiply
239.38x = 358.98 × 76.99 - Step 4: Simplify right side
239.38x = 27,637.87 - Step 5: Solve for x
x = 27,637.87/239.38 - Step 6: Final answer
x = 115.46
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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.