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Finding the Fourth Proportional to 267.12, 402.21 and 195.48

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Solution

The fourth proportional to 267.12, 402.21 and 195.48 is: 294.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.12 : 402.21 = 195.48 : x
  2. Step 2: Convert to fraction form
    267.12/402.21 = 195.48/x
  3. Step 3: Cross multiply
    267.12x = 402.21 × 195.48
  4. Step 4: Simplify right side
    267.12x = 78,624.01
  5. Step 5: Solve for x
    x = 78,624.01/267.12
  6. Step 6: Final answer
    x = 294.34

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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.