Finding the Fourth Proportional to 439.14, 658.68 and 130.99
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Solution
The fourth proportional to 439.14, 658.68 and 130.99 is: 196.48
Step by Step Solution
- Step 1: Write the proportion equation
439.14 : 658.68 = 130.99 : x - Step 2: Convert to fraction form
439.14/658.68 = 130.99/x - Step 3: Cross multiply
439.14x = 658.68 × 130.99 - Step 4: Simplify right side
439.14x = 86,280.49 - Step 5: Solve for x
x = 86,280.49/439.14 - Step 6: Final answer
x = 196.48
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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.