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Finding the Fourth Proportional to 424.64, 636.92 and 150.66

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Solution

The fourth proportional to 424.64, 636.92 and 150.66 is: 225.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.64 : 636.92 = 150.66 : x
  2. Step 2: Convert to fraction form
    424.64/636.92 = 150.66/x
  3. Step 3: Cross multiply
    424.64x = 636.92 × 150.66
  4. Step 4: Simplify right side
    424.64x = 95,958.37
  5. Step 5: Solve for x
    x = 95,958.37/424.64
  6. Step 6: Final answer
    x = 225.98

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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.