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Finding the Fourth Proportional to 445.60, 614.95 and 249.11

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Solution

The fourth proportional to 445.60, 614.95 and 249.11 is: 343.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.60 : 614.95 = 249.11 : x
  2. Step 2: Convert to fraction form
    445.60/614.95 = 249.11/x
  3. Step 3: Cross multiply
    445.60x = 614.95 × 249.11
  4. Step 4: Simplify right side
    445.60x = 153,190.19
  5. Step 5: Solve for x
    x = 153,190.19/445.60
  6. Step 6: Final answer
    x = 343.78

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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.