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Finding the Third Proportional to 579 and 1,260.75

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Solution

The third proportional to 579 and 1,260.75 is: 2,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    579 : 1,260.75 = 1,260.75 : x
  2. Step 2: Convert to fraction form
    579/1,260.75 = 1,260.75/x
  3. Step 3: Cross multiply
    579x = 1,260.75 × 1,260.75
  4. Step 4: Simplify right side
    579x = 1,589,490.56
  5. Step 5: Solve for x
    x = 1,589,490.56/579
  6. Step 6: Final answer
    x = 2,745.23

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.