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Finding the Fourth Proportional to 400.38, 600.49 and 169.39

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Solution

The fourth proportional to 400.38, 600.49 and 169.39 is: 254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.38 : 600.49 = 169.39 : x
  2. Step 2: Convert to fraction form
    400.38/600.49 = 169.39/x
  3. Step 3: Cross multiply
    400.38x = 600.49 × 169.39
  4. Step 4: Simplify right side
    400.38x = 101,717.00
  5. Step 5: Solve for x
    x = 101,717.00/400.38
  6. Step 6: Final answer
    x = 254.05

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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.