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Finding the Fourth Proportional to 439.69, 658.22 and 265.83

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Solution

The fourth proportional to 439.69, 658.22 and 265.83 is: 397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.69 : 658.22 = 265.83 : x
  2. Step 2: Convert to fraction form
    439.69/658.22 = 265.83/x
  3. Step 3: Cross multiply
    439.69x = 658.22 × 265.83
  4. Step 4: Simplify right side
    439.69x = 174,976.77
  5. Step 5: Solve for x
    x = 174,976.77/439.69
  6. Step 6: Final answer
    x = 397.95

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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.