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Finding the Fourth Proportional to 445.75, 615.17 and 249.23

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Solution

The fourth proportional to 445.75, 615.17 and 249.23 is: 343.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.75 : 615.17 = 249.23 : x
  2. Step 2: Convert to fraction form
    445.75/615.17 = 249.23/x
  3. Step 3: Cross multiply
    445.75x = 615.17 × 249.23
  4. Step 4: Simplify right side
    445.75x = 153,318.82
  5. Step 5: Solve for x
    x = 153,318.82/445.75
  6. Step 6: Final answer
    x = 343.96

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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.