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Finding the Fourth Proportional to 461.43, 636.21 and 382.83

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Solution

The fourth proportional to 461.43, 636.21 and 382.83 is: 527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.43 : 636.21 = 382.83 : x
  2. Step 2: Convert to fraction form
    461.43/636.21 = 382.83/x
  3. Step 3: Cross multiply
    461.43x = 636.21 × 382.83
  4. Step 4: Simplify right side
    461.43x = 243,560.27
  5. Step 5: Solve for x
    x = 243,560.27/461.43
  6. Step 6: Final answer
    x = 527.84

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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.