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Finding the Third Proportional to 579.50 and 1,288.56

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Solution

The third proportional to 579.50 and 1,288.56 is: 2,865.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.50 : 1,288.56 = 1,288.56 : x
  2. Step 2: Convert to fraction form
    579.50/1,288.56 = 1,288.56/x
  3. Step 3: Cross multiply
    579.50x = 1,288.56 × 1,288.56
  4. Step 4: Simplify right side
    579.50x = 1,660,398.35
  5. Step 5: Solve for x
    x = 1,660,398.35/579.50
  6. Step 6: Final answer
    x = 2,865.24

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.