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Finding the Fourth Proportional to 267.06, 397.92 and 253.86

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Solution

The fourth proportional to 267.06, 397.92 and 253.86 is: 378.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.06 : 397.92 = 253.86 : x
  2. Step 2: Convert to fraction form
    267.06/397.92 = 253.86/x
  3. Step 3: Cross multiply
    267.06x = 397.92 × 253.86
  4. Step 4: Simplify right side
    267.06x = 101,015.97
  5. Step 5: Solve for x
    x = 101,015.97/267.06
  6. Step 6: Final answer
    x = 378.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.