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Finding the Third Proportional to 611.30 and 1,342.20

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Solution

The third proportional to 611.30 and 1,342.20 is: 2,946.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.30 : 1,342.20 = 1,342.20 : x
  2. Step 2: Convert to fraction form
    611.30/1,342.20 = 1,342.20/x
  3. Step 3: Cross multiply
    611.30x = 1,342.20 × 1,342.20
  4. Step 4: Simplify right side
    611.30x = 1,801,488.26
  5. Step 5: Solve for x
    x = 1,801,488.26/611.30
  6. Step 6: Final answer
    x = 2,946.99

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.