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Finding the Fourth Proportional to 267.17, 400.92 and 145.46

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Solution

The fourth proportional to 267.17, 400.92 and 145.46 is: 218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.17 : 400.92 = 145.46 : x
  2. Step 2: Convert to fraction form
    267.17/400.92 = 145.46/x
  3. Step 3: Cross multiply
    267.17x = 400.92 × 145.46
  4. Step 4: Simplify right side
    267.17x = 58,317.82
  5. Step 5: Solve for x
    x = 58,317.82/267.17
  6. Step 6: Final answer
    x = 218.28

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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.