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Finding the Fourth Proportional to 249.32, 343.99 and 144.38

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Solution

The fourth proportional to 249.32, 343.99 and 144.38 is: 199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.32 : 343.99 = 144.38 : x
  2. Step 2: Convert to fraction form
    249.32/343.99 = 144.38/x
  3. Step 3: Cross multiply
    249.32x = 343.99 × 144.38
  4. Step 4: Simplify right side
    249.32x = 49,665.28
  5. Step 5: Solve for x
    x = 49,665.28/249.32
  6. Step 6: Final answer
    x = 199.20

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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.