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Finding the Fourth Proportional to 267.25, 400.67 and 84.54

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Solution

The fourth proportional to 267.25, 400.67 and 84.54 is: 126.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.25 : 400.67 = 84.54 : x
  2. Step 2: Convert to fraction form
    267.25/400.67 = 84.54/x
  3. Step 3: Cross multiply
    267.25x = 400.67 × 84.54
  4. Step 4: Simplify right side
    267.25x = 33,872.64
  5. Step 5: Solve for x
    x = 33,872.64/267.25
  6. Step 6: Final answer
    x = 126.75

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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.