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Finding the Fourth Proportional to 267.15, 397.49 and 252.57

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Solution

The fourth proportional to 267.15, 397.49 and 252.57 is: 375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.15 : 397.49 = 252.57 : x
  2. Step 2: Convert to fraction form
    267.15/397.49 = 252.57/x
  3. Step 3: Cross multiply
    267.15x = 397.49 × 252.57
  4. Step 4: Simplify right side
    267.15x = 100,394.53
  5. Step 5: Solve for x
    x = 100,394.53/267.15
  6. Step 6: Final answer
    x = 375.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.