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Finding the Fourth Proportional to 632.29, 947.25 and 426.50

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Solution

The fourth proportional to 632.29, 947.25 and 426.50 is: 638.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.29 : 947.25 = 426.50 : x
  2. Step 2: Convert to fraction form
    632.29/947.25 = 426.50/x
  3. Step 3: Cross multiply
    632.29x = 947.25 × 426.50
  4. Step 4: Simplify right side
    632.29x = 404,002.13
  5. Step 5: Solve for x
    x = 404,002.13/632.29
  6. Step 6: Final answer
    x = 638.95

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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.