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Finding the Fourth Proportional to 445.97, 615.44 and 249.48

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Solution

The fourth proportional to 445.97, 615.44 and 249.48 is: 344.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.97 : 615.44 = 249.48 : x
  2. Step 2: Convert to fraction form
    445.97/615.44 = 249.48/x
  3. Step 3: Cross multiply
    445.97x = 615.44 × 249.48
  4. Step 4: Simplify right side
    445.97x = 153,540.35
  5. Step 5: Solve for x
    x = 153,540.35/445.97
  6. Step 6: Final answer
    x = 344.28

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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.