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Finding the Fourth Proportional to 249.45, 371.91 and 243.04

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Solution

The fourth proportional to 249.45, 371.91 and 243.04 is: 362.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.45 : 371.91 = 243.04 : x
  2. Step 2: Convert to fraction form
    249.45/371.91 = 243.04/x
  3. Step 3: Cross multiply
    249.45x = 371.91 × 243.04
  4. Step 4: Simplify right side
    249.45x = 90,389.01
  5. Step 5: Solve for x
    x = 90,389.01/249.45
  6. Step 6: Final answer
    x = 362.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.