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Finding the Fourth Proportional to 267.25, 400.42 and 189.83

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Solution

The fourth proportional to 267.25, 400.42 and 189.83 is: 284.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.25 : 400.42 = 189.83 : x
  2. Step 2: Convert to fraction form
    267.25/400.42 = 189.83/x
  3. Step 3: Cross multiply
    267.25x = 400.42 × 189.83
  4. Step 4: Simplify right side
    267.25x = 76,011.73
  5. Step 5: Solve for x
    x = 76,011.73/267.25
  6. Step 6: Final answer
    x = 284.42

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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.