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Finding the Fourth Proportional to 249.66, 372.60 and 243.18

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Solution

The fourth proportional to 249.66, 372.60 and 243.18 is: 362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.66 : 372.60 = 243.18 : x
  2. Step 2: Convert to fraction form
    249.66/372.60 = 243.18/x
  3. Step 3: Cross multiply
    249.66x = 372.60 × 243.18
  4. Step 4: Simplify right side
    249.66x = 90,608.87
  5. Step 5: Solve for x
    x = 90,608.87/249.66
  6. Step 6: Final answer
    x = 362.93

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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.