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Finding the Third Proportional to 635.06 and 720.56

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Solution

The third proportional to 635.06 and 720.56 is: 817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.06 : 720.56 = 720.56 : x
  2. Step 2: Convert to fraction form
    635.06/720.56 = 720.56/x
  3. Step 3: Cross multiply
    635.06x = 720.56 × 720.56
  4. Step 4: Simplify right side
    635.06x = 519,210.32
  5. Step 5: Solve for x
    x = 519,210.32/635.06
  6. Step 6: Final answer
    x = 817.57

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.