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Finding the Third Proportional to 515.06 and 798.75

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Solution

The third proportional to 515.06 and 798.75 is: 1,238.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.06 : 798.75 = 798.75 : x
  2. Step 2: Convert to fraction form
    515.06/798.75 = 798.75/x
  3. Step 3: Cross multiply
    515.06x = 798.75 × 798.75
  4. Step 4: Simplify right side
    515.06x = 638,001.56
  5. Step 5: Solve for x
    x = 638,001.56/515.06
  6. Step 6: Final answer
    x = 1,238.69

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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.