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Finding the Fourth Proportional to 951.01, 1,425.16 and 429.71

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Solution

The fourth proportional to 951.01, 1,425.16 and 429.71 is: 643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.01 : 1,425.16 = 429.71 : x
  2. Step 2: Convert to fraction form
    951.01/1,425.16 = 429.71/x
  3. Step 3: Cross multiply
    951.01x = 1,425.16 × 429.71
  4. Step 4: Simplify right side
    951.01x = 612,398.91
  5. Step 5: Solve for x
    x = 612,398.91/951.01
  6. Step 6: Final answer
    x = 643.95

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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.