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Finding the Fourth Proportional to 180.12, 269.93 and 88.70

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Solution

The fourth proportional to 180.12, 269.93 and 88.70 is: 132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.12 : 269.93 = 88.70 : x
  2. Step 2: Convert to fraction form
    180.12/269.93 = 88.70/x
  3. Step 3: Cross multiply
    180.12x = 269.93 × 88.70
  4. Step 4: Simplify right side
    180.12x = 23,941.66
  5. Step 5: Solve for x
    x = 23,941.66/180.12
  6. Step 6: Final answer
    x = 132.92

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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.