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Finding the Fourth Proportional to 641.92, 884.68 and 466.96

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Solution

The fourth proportional to 641.92, 884.68 and 466.96 is: 643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.92 : 884.68 = 466.96 : x
  2. Step 2: Convert to fraction form
    641.92/884.68 = 466.96/x
  3. Step 3: Cross multiply
    641.92x = 884.68 × 466.96
  4. Step 4: Simplify right side
    641.92x = 413,110.17
  5. Step 5: Solve for x
    x = 413,110.17/641.92
  6. Step 6: Final answer
    x = 643.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.