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Finding the Third Proportional to 619.13 and 1,385.06

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Solution

The third proportional to 619.13 and 1,385.06 is: 3,098.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.13 : 1,385.06 = 1,385.06 : x
  2. Step 2: Convert to fraction form
    619.13/1,385.06 = 1,385.06/x
  3. Step 3: Cross multiply
    619.13x = 1,385.06 × 1,385.06
  4. Step 4: Simplify right side
    619.13x = 1,918,398.13
  5. Step 5: Solve for x
    x = 1,918,398.13/619.13
  6. Step 6: Final answer
    x = 3,098.56

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Why These Related Problems?

These problems maintain the same ratio (2.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.