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Finding the Fourth Proportional to 267.72, 401.28 and 176.27

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Solution

The fourth proportional to 267.72, 401.28 and 176.27 is: 264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.72 : 401.28 = 176.27 : x
  2. Step 2: Convert to fraction form
    267.72/401.28 = 176.27/x
  3. Step 3: Cross multiply
    267.72x = 401.28 × 176.27
  4. Step 4: Simplify right side
    267.72x = 70,731.62
  5. Step 5: Solve for x
    x = 70,731.62/267.72
  6. Step 6: Final answer
    x = 264.20

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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.