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Finding the Fourth Proportional to 267.71, 400.89 and 169.91

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Solution

The fourth proportional to 267.71, 400.89 and 169.91 is: 254.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.71 : 400.89 = 169.91 : x
  2. Step 2: Convert to fraction form
    267.71/400.89 = 169.91/x
  3. Step 3: Cross multiply
    267.71x = 400.89 × 169.91
  4. Step 4: Simplify right side
    267.71x = 68,116.22
  5. Step 5: Solve for x
    x = 68,116.22/267.71
  6. Step 6: Final answer
    x = 254.44

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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.