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Finding the Fourth Proportional to 629.73, 868.22 and 461.15

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Solution

The fourth proportional to 629.73, 868.22 and 461.15 is: 635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.73 : 868.22 = 461.15 : x
  2. Step 2: Convert to fraction form
    629.73/868.22 = 461.15/x
  3. Step 3: Cross multiply
    629.73x = 868.22 × 461.15
  4. Step 4: Simplify right side
    629.73x = 400,380.06
  5. Step 5: Solve for x
    x = 400,380.06/629.73
  6. Step 6: Final answer
    x = 635.80

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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.