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Finding the Fourth Proportional to 249.06, 372.99 and 139.10

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Solution

The fourth proportional to 249.06, 372.99 and 139.10 is: 208.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.06 : 372.99 = 139.10 : x
  2. Step 2: Convert to fraction form
    249.06/372.99 = 139.10/x
  3. Step 3: Cross multiply
    249.06x = 372.99 × 139.10
  4. Step 4: Simplify right side
    249.06x = 51,882.91
  5. Step 5: Solve for x
    x = 51,882.91/249.06
  6. Step 6: Final answer
    x = 208.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.