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Finding the Fourth Proportional to 253.91, 348.11 and 249.29

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Solution

The fourth proportional to 253.91, 348.11 and 249.29 is: 341.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.91 : 348.11 = 249.29 : x
  2. Step 2: Convert to fraction form
    253.91/348.11 = 249.29/x
  3. Step 3: Cross multiply
    253.91x = 348.11 × 249.29
  4. Step 4: Simplify right side
    253.91x = 86,779.97
  5. Step 5: Solve for x
    x = 86,779.97/253.91
  6. Step 6: Final answer
    x = 341.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.