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Finding the Fourth Proportional to 267.80, 402.31 and 176.67

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Solution

The fourth proportional to 267.80, 402.31 and 176.67 is: 265.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.80 : 402.31 = 176.67 : x
  2. Step 2: Convert to fraction form
    267.80/402.31 = 176.67/x
  3. Step 3: Cross multiply
    267.80x = 402.31 × 176.67
  4. Step 4: Simplify right side
    267.80x = 71,076.23
  5. Step 5: Solve for x
    x = 71,076.23/267.80
  6. Step 6: Final answer
    x = 265.41

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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.