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Finding the Fourth Proportional to 249.56, 344.39 and 144.68

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Solution

The fourth proportional to 249.56, 344.39 and 144.68 is: 199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.56 : 344.39 = 144.68 : x
  2. Step 2: Convert to fraction form
    249.56/344.39 = 144.68/x
  3. Step 3: Cross multiply
    249.56x = 344.39 × 144.68
  4. Step 4: Simplify right side
    249.56x = 49,826.35
  5. Step 5: Solve for x
    x = 49,826.35/249.56
  6. Step 6: Final answer
    x = 199.66

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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.