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Finding the Fourth Proportional to 203.22, 280.80 and 195.12

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Solution

The fourth proportional to 203.22, 280.80 and 195.12 is: 269.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.22 : 280.80 = 195.12 : x
  2. Step 2: Convert to fraction form
    203.22/280.80 = 195.12/x
  3. Step 3: Cross multiply
    203.22x = 280.80 × 195.12
  4. Step 4: Simplify right side
    203.22x = 54,789.70
  5. Step 5: Solve for x
    x = 54,789.70/203.22
  6. Step 6: Final answer
    x = 269.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.