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Finding the Third Proportional to 540.50 and 1,280.75

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Solution

The third proportional to 540.50 and 1,280.75 is: 3,034.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.50 : 1,280.75 = 1,280.75 : x
  2. Step 2: Convert to fraction form
    540.50/1,280.75 = 1,280.75/x
  3. Step 3: Cross multiply
    540.50x = 1,280.75 × 1,280.75
  4. Step 4: Simplify right side
    540.50x = 1,640,320.56
  5. Step 5: Solve for x
    x = 1,640,320.56/540.50
  6. Step 6: Final answer
    x = 3,034.82

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.