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Finding the Fourth Proportional to 249.27, 344.12 and 191.31

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Solution

The fourth proportional to 249.27, 344.12 and 191.31 is: 264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.27 : 344.12 = 191.31 : x
  2. Step 2: Convert to fraction form
    249.27/344.12 = 191.31/x
  3. Step 3: Cross multiply
    249.27x = 344.12 × 191.31
  4. Step 4: Simplify right side
    249.27x = 65,832.64
  5. Step 5: Solve for x
    x = 65,832.64/249.27
  6. Step 6: Final answer
    x = 264.10

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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.