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Finding the Fourth Proportional to 614.20, 845.76 and 439.24

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Solution

The fourth proportional to 614.20, 845.76 and 439.24 is: 604.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.20 : 845.76 = 439.24 : x
  2. Step 2: Convert to fraction form
    614.20/845.76 = 439.24/x
  3. Step 3: Cross multiply
    614.20x = 845.76 × 439.24
  4. Step 4: Simplify right side
    614.20x = 371,491.62
  5. Step 5: Solve for x
    x = 371,491.62/614.20
  6. Step 6: Final answer
    x = 604.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.