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Finding the Fourth Proportional to 638.01, 954.99 and 522.18

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Solution

The fourth proportional to 638.01, 954.99 and 522.18 is: 781.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.01 : 954.99 = 522.18 : x
  2. Step 2: Convert to fraction form
    638.01/954.99 = 522.18/x
  3. Step 3: Cross multiply
    638.01x = 954.99 × 522.18
  4. Step 4: Simplify right side
    638.01x = 498,676.68
  5. Step 5: Solve for x
    x = 498,676.68/638.01
  6. Step 6: Final answer
    x = 781.61

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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.