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Finding the Fourth Proportional to 180.70, 271.05 and 108.70

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Solution

The fourth proportional to 180.70, 271.05 and 108.70 is: 163.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.70 : 271.05 = 108.70 : x
  2. Step 2: Convert to fraction form
    180.70/271.05 = 108.70/x
  3. Step 3: Cross multiply
    180.70x = 271.05 × 108.70
  4. Step 4: Simplify right side
    180.70x = 29,463.14
  5. Step 5: Solve for x
    x = 29,463.14/180.70
  6. Step 6: Final answer
    x = 163.05

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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.