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Finding the Fourth Proportional to 267.87, 371.39 and 258.87

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Solution

The fourth proportional to 267.87, 371.39 and 258.87 is: 358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.87 : 371.39 = 258.87 : x
  2. Step 2: Convert to fraction form
    267.87/371.39 = 258.87/x
  3. Step 3: Cross multiply
    267.87x = 371.39 × 258.87
  4. Step 4: Simplify right side
    267.87x = 96,142.38
  5. Step 5: Solve for x
    x = 96,142.38/267.87
  6. Step 6: Final answer
    x = 358.91

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.