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Finding the Fourth Proportional to 658.13, 908.22 and 425.66

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Solution

The fourth proportional to 658.13, 908.22 and 425.66 is: 587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.13 : 908.22 = 425.66 : x
  2. Step 2: Convert to fraction form
    658.13/908.22 = 425.66/x
  3. Step 3: Cross multiply
    658.13x = 908.22 × 425.66
  4. Step 4: Simplify right side
    658.13x = 386,589.98
  5. Step 5: Solve for x
    x = 386,589.98/658.13
  6. Step 6: Final answer
    x = 587.41

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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.