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Finding the Third Proportional to 693.56 and 1,020.09

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Solution

The third proportional to 693.56 and 1,020.09 is: 1,500.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.56 : 1,020.09 = 1,020.09 : x
  2. Step 2: Convert to fraction form
    693.56/1,020.09 = 1,020.09/x
  3. Step 3: Cross multiply
    693.56x = 1,020.09 × 1,020.09
  4. Step 4: Simplify right side
    693.56x = 1,040,591.26
  5. Step 5: Solve for x
    x = 1,040,591.26/693.56
  6. Step 6: Final answer
    x = 1,500.36

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.