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Finding the Fourth Proportional to 177.90, 267.22 and 170.76

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Solution

The fourth proportional to 177.90, 267.22 and 170.76 is: 256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.90 : 267.22 = 170.76 : x
  2. Step 2: Convert to fraction form
    177.90/267.22 = 170.76/x
  3. Step 3: Cross multiply
    177.90x = 267.22 × 170.76
  4. Step 4: Simplify right side
    177.90x = 45,630.68
  5. Step 5: Solve for x
    x = 45,630.68/177.90
  6. Step 6: Final answer
    x = 256.50

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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.