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Finding the Fourth Proportional to 249.90, 373.22 and 217.50

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Solution

The fourth proportional to 249.90, 373.22 and 217.50 is: 324.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.90 : 373.22 = 217.50 : x
  2. Step 2: Convert to fraction form
    249.90/373.22 = 217.50/x
  3. Step 3: Cross multiply
    249.90x = 373.22 × 217.50
  4. Step 4: Simplify right side
    249.90x = 81,174.26
  5. Step 5: Solve for x
    x = 81,174.26/249.90
  6. Step 6: Final answer
    x = 324.83

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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.