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Finding the Fourth Proportional to 646.92, 966.60 and 624.24

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Solution

The fourth proportional to 646.92, 966.60 and 624.24 is: 932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.92 : 966.60 = 624.24 : x
  2. Step 2: Convert to fraction form
    646.92/966.60 = 624.24/x
  3. Step 3: Cross multiply
    646.92x = 966.60 × 624.24
  4. Step 4: Simplify right side
    646.92x = 603,390.38
  5. Step 5: Solve for x
    x = 603,390.38/646.92
  6. Step 6: Final answer
    x = 932.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.