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Finding the Fourth Proportional to 635.12, 951.21 and 557.27

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Solution

The fourth proportional to 635.12, 951.21 and 557.27 is: 834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.12 : 951.21 = 557.27 : x
  2. Step 2: Convert to fraction form
    635.12/951.21 = 557.27/x
  3. Step 3: Cross multiply
    635.12x = 951.21 × 557.27
  4. Step 4: Simplify right side
    635.12x = 530,076.04
  5. Step 5: Solve for x
    x = 530,076.04/635.12
  6. Step 6: Final answer
    x = 834.61

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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.