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Finding the Fourth Proportional to 636.72, 956.24 and 473.88

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Solution

The fourth proportional to 636.72, 956.24 and 473.88 is: 711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.72 : 956.24 = 473.88 : x
  2. Step 2: Convert to fraction form
    636.72/956.24 = 473.88/x
  3. Step 3: Cross multiply
    636.72x = 956.24 × 473.88
  4. Step 4: Simplify right side
    636.72x = 453,143.01
  5. Step 5: Solve for x
    x = 453,143.01/636.72
  6. Step 6: Final answer
    x = 711.68

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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.