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Finding the Fourth Proportional to 180.80, 271.36 and 140.48

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Solution

The fourth proportional to 180.80, 271.36 and 140.48 is: 210.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.80 : 271.36 = 140.48 : x
  2. Step 2: Convert to fraction form
    180.80/271.36 = 140.48/x
  3. Step 3: Cross multiply
    180.80x = 271.36 × 140.48
  4. Step 4: Simplify right side
    180.80x = 38,120.65
  5. Step 5: Solve for x
    x = 38,120.65/180.80
  6. Step 6: Final answer
    x = 210.84

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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.