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Finding the Fourth Proportional to 424.11, 635.76 and 163.92

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Solution

The fourth proportional to 424.11, 635.76 and 163.92 is: 245.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.11 : 635.76 = 163.92 : x
  2. Step 2: Convert to fraction form
    424.11/635.76 = 163.92/x
  3. Step 3: Cross multiply
    424.11x = 635.76 × 163.92
  4. Step 4: Simplify right side
    424.11x = 104,213.78
  5. Step 5: Solve for x
    x = 104,213.78/424.11
  6. Step 6: Final answer
    x = 245.72

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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.