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Finding the Third Proportional to 575.75 and 1,221.38

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Solution

The third proportional to 575.75 and 1,221.38 is: 2,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.75 : 1,221.38 = 1,221.38 : x
  2. Step 2: Convert to fraction form
    575.75/1,221.38 = 1,221.38/x
  3. Step 3: Cross multiply
    575.75x = 1,221.38 × 1,221.38
  4. Step 4: Simplify right side
    575.75x = 1,491,756.89
  5. Step 5: Solve for x
    x = 1,491,756.89/575.75
  6. Step 6: Final answer
    x = 2,590.98

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.