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Finding the Fourth Proportional to 270.73, 406.50 and 219.70

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Solution

The fourth proportional to 270.73, 406.50 and 219.70 is: 329.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.73 : 406.50 = 219.70 : x
  2. Step 2: Convert to fraction form
    270.73/406.50 = 219.70/x
  3. Step 3: Cross multiply
    270.73x = 406.50 × 219.70
  4. Step 4: Simplify right side
    270.73x = 89,308.05
  5. Step 5: Solve for x
    x = 89,308.05/270.73
  6. Step 6: Final answer
    x = 329.88

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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.