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Finding the Third Proportional to 518.50 and 1,190.75

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Solution

The third proportional to 518.50 and 1,190.75 is: 2,734.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.50 : 1,190.75 = 1,190.75 : x
  2. Step 2: Convert to fraction form
    518.50/1,190.75 = 1,190.75/x
  3. Step 3: Cross multiply
    518.50x = 1,190.75 × 1,190.75
  4. Step 4: Simplify right side
    518.50x = 1,417,885.56
  5. Step 5: Solve for x
    x = 1,417,885.56/518.50
  6. Step 6: Final answer
    x = 2,734.59

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.