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Finding the Third Proportional to 121.50 and 184.75

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Solution

The third proportional to 121.50 and 184.75 is: 280.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.50 : 184.75 = 184.75 : x
  2. Step 2: Convert to fraction form
    121.50/184.75 = 184.75/x
  3. Step 3: Cross multiply
    121.50x = 184.75 × 184.75
  4. Step 4: Simplify right side
    121.50x = 34,132.56
  5. Step 5: Solve for x
    x = 34,132.56/121.50
  6. Step 6: Final answer
    x = 280.93

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.