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Finding the Fourth Proportional to 267.31, 401.20 and 130.51

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Solution

The fourth proportional to 267.31, 401.20 and 130.51 is: 195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.31 : 401.20 = 130.51 : x
  2. Step 2: Convert to fraction form
    267.31/401.20 = 130.51/x
  3. Step 3: Cross multiply
    267.31x = 401.20 × 130.51
  4. Step 4: Simplify right side
    267.31x = 52,360.61
  5. Step 5: Solve for x
    x = 52,360.61/267.31
  6. Step 6: Final answer
    x = 195.88

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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.