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Finding the Fourth Proportional to 267.08, 400.85 and 137.17

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Solution

The fourth proportional to 267.08, 400.85 and 137.17 is: 205.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.08 : 400.85 = 137.17 : x
  2. Step 2: Convert to fraction form
    267.08/400.85 = 137.17/x
  3. Step 3: Cross multiply
    267.08x = 400.85 × 137.17
  4. Step 4: Simplify right side
    267.08x = 54,984.59
  5. Step 5: Solve for x
    x = 54,984.59/267.08
  6. Step 6: Final answer
    x = 205.87

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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.