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Finding the Fourth Proportional to 614.30, 920.73 and 267.57

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Solution

The fourth proportional to 614.30, 920.73 and 267.57 is: 401.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.30 : 920.73 = 267.57 : x
  2. Step 2: Convert to fraction form
    614.30/920.73 = 267.57/x
  3. Step 3: Cross multiply
    614.30x = 920.73 × 267.57
  4. Step 4: Simplify right side
    614.30x = 246,360.73
  5. Step 5: Solve for x
    x = 246,360.73/614.30
  6. Step 6: Final answer
    x = 401.05

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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.