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Finding the Third Proportional to 122.06 and 287.06

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Solution

The third proportional to 122.06 and 287.06 is: 675.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.06 : 287.06 = 287.06 : x
  2. Step 2: Convert to fraction form
    122.06/287.06 = 287.06/x
  3. Step 3: Cross multiply
    122.06x = 287.06 × 287.06
  4. Step 4: Simplify right side
    122.06x = 82,404.88
  5. Step 5: Solve for x
    x = 82,404.88/122.06
  6. Step 6: Final answer
    x = 675.10

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.