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Finding the Third Proportional to 782.79 and 1,101.09

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Solution

The third proportional to 782.79 and 1,101.09 is: 1,548.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    782.79 : 1,101.09 = 1,101.09 : x
  2. Step 2: Convert to fraction form
    782.79/1,101.09 = 1,101.09/x
  3. Step 3: Cross multiply
    782.79x = 1,101.09 × 1,101.09
  4. Step 4: Simplify right side
    782.79x = 1,212,407.45
  5. Step 5: Solve for x
    x = 1,212,407.45/782.79
  6. Step 6: Final answer
    x = 1,548.83

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.