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Finding the Fourth Proportional to 221.88, 334.11 and 195.15

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Solution

The fourth proportional to 221.88, 334.11 and 195.15 is: 293.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.88 : 334.11 = 195.15 : x
  2. Step 2: Convert to fraction form
    221.88/334.11 = 195.15/x
  3. Step 3: Cross multiply
    221.88x = 334.11 × 195.15
  4. Step 4: Simplify right side
    221.88x = 65,201.57
  5. Step 5: Solve for x
    x = 65,201.57/221.88
  6. Step 6: Final answer
    x = 293.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.