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Finding the Fourth Proportional to 180.80, 271.10 and 112.16

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Solution

The fourth proportional to 180.80, 271.10 and 112.16 is: 168.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.80 : 271.10 = 112.16 : x
  2. Step 2: Convert to fraction form
    180.80/271.10 = 112.16/x
  3. Step 3: Cross multiply
    180.80x = 271.10 × 112.16
  4. Step 4: Simplify right side
    180.80x = 30,406.58
  5. Step 5: Solve for x
    x = 30,406.58/180.80
  6. Step 6: Final answer
    x = 168.18

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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.