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Finding the Fourth Proportional to 636.92, 956.28 and 329

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Solution

The fourth proportional to 636.92, 956.28 and 329 is: 493.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.92 : 956.28 = 329 : x
  2. Step 2: Convert to fraction form
    636.92/956.28 = 329/x
  3. Step 3: Cross multiply
    636.92x = 956.28 × 329
  4. Step 4: Simplify right side
    636.92x = 314,616.12
  5. Step 5: Solve for x
    x = 314,616.12/636.92
  6. Step 6: Final answer
    x = 493.96

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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.