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Finding the Fourth Proportional to 267.65, 399.11 and 249.15

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Solution

The fourth proportional to 267.65, 399.11 and 249.15 is: 371.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.65 : 399.11 = 249.15 : x
  2. Step 2: Convert to fraction form
    267.65/399.11 = 249.15/x
  3. Step 3: Cross multiply
    267.65x = 399.11 × 249.15
  4. Step 4: Simplify right side
    267.65x = 99,438.26
  5. Step 5: Solve for x
    x = 99,438.26/267.65
  6. Step 6: Final answer
    x = 371.52

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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.