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Finding the Fourth Proportional to 249.90, 372.95 and 222.57

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Solution

The fourth proportional to 249.90, 372.95 and 222.57 is: 332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.90 : 372.95 = 222.57 : x
  2. Step 2: Convert to fraction form
    249.90/372.95 = 222.57/x
  3. Step 3: Cross multiply
    249.90x = 372.95 × 222.57
  4. Step 4: Simplify right side
    249.90x = 83,005.39
  5. Step 5: Solve for x
    x = 83,005.39/249.90
  6. Step 6: Final answer
    x = 332.15

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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.