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Finding the Fourth Proportional to 249.04, 343.67 and 138.52

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Solution

The fourth proportional to 249.04, 343.67 and 138.52 is: 191.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.04 : 343.67 = 138.52 : x
  2. Step 2: Convert to fraction form
    249.04/343.67 = 138.52/x
  3. Step 3: Cross multiply
    249.04x = 343.67 × 138.52
  4. Step 4: Simplify right side
    249.04x = 47,605.17
  5. Step 5: Solve for x
    x = 47,605.17/249.04
  6. Step 6: Final answer
    x = 191.15

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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.