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Finding the Fourth Proportional to 343.17, 472.74 and 249.27

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Solution

The fourth proportional to 343.17, 472.74 and 249.27 is: 343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.17 : 472.74 = 249.27 : x
  2. Step 2: Convert to fraction form
    343.17/472.74 = 249.27/x
  3. Step 3: Cross multiply
    343.17x = 472.74 × 249.27
  4. Step 4: Simplify right side
    343.17x = 117,839.90
  5. Step 5: Solve for x
    x = 117,839.90/343.17
  6. Step 6: Final answer
    x = 343.39

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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.