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Finding the Fourth Proportional to 267.76, 402.36 and 267.04

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Solution

The fourth proportional to 267.76, 402.36 and 267.04 is: 401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.76 : 402.36 = 267.04 : x
  2. Step 2: Convert to fraction form
    267.76/402.36 = 267.04/x
  3. Step 3: Cross multiply
    267.76x = 402.36 × 267.04
  4. Step 4: Simplify right side
    267.76x = 107,446.21
  5. Step 5: Solve for x
    x = 107,446.21/267.76
  6. Step 6: Final answer
    x = 401.28

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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.