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Finding the Third Proportional to 558.50 and 997.75

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Solution

The third proportional to 558.50 and 997.75 is: 1,782.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.50 : 997.75 = 997.75 : x
  2. Step 2: Convert to fraction form
    558.50/997.75 = 997.75/x
  3. Step 3: Cross multiply
    558.50x = 997.75 × 997.75
  4. Step 4: Simplify right side
    558.50x = 995,505.06
  5. Step 5: Solve for x
    x = 995,505.06/558.50
  6. Step 6: Final answer
    x = 1,782.46

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.