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Finding the Fourth Proportional to 177.58, 267.18 and 105.49

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Solution

The fourth proportional to 177.58, 267.18 and 105.49 is: 158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.58 : 267.18 = 105.49 : x
  2. Step 2: Convert to fraction form
    177.58/267.18 = 105.49/x
  3. Step 3: Cross multiply
    177.58x = 267.18 × 105.49
  4. Step 4: Simplify right side
    177.58x = 28,184.82
  5. Step 5: Solve for x
    x = 28,184.82/177.58
  6. Step 6: Final answer
    x = 158.72

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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.