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Finding the Fourth Proportional to 179.21, 246.85 and 140.33

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Solution

The fourth proportional to 179.21, 246.85 and 140.33 is: 193.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.21 : 246.85 = 140.33 : x
  2. Step 2: Convert to fraction form
    179.21/246.85 = 140.33/x
  3. Step 3: Cross multiply
    179.21x = 246.85 × 140.33
  4. Step 4: Simplify right side
    179.21x = 34,640.73
  5. Step 5: Solve for x
    x = 34,640.73/179.21
  6. Step 6: Final answer
    x = 193.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.