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Finding the Fourth Proportional to 614.31, 920.64 and 267.54

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Solution

The fourth proportional to 614.31, 920.64 and 267.54 is: 400.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.31 : 920.64 = 267.54 : x
  2. Step 2: Convert to fraction form
    614.31/920.64 = 267.54/x
  3. Step 3: Cross multiply
    614.31x = 920.64 × 267.54
  4. Step 4: Simplify right side
    614.31x = 246,308.03
  5. Step 5: Solve for x
    x = 246,308.03/614.31
  6. Step 6: Final answer
    x = 400.95

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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.