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Finding the Third Proportional to 515.06 and 651.94

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Solution

The third proportional to 515.06 and 651.94 is: 825.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.06 : 651.94 = 651.94 : x
  2. Step 2: Convert to fraction form
    515.06/651.94 = 651.94/x
  3. Step 3: Cross multiply
    515.06x = 651.94 × 651.94
  4. Step 4: Simplify right side
    515.06x = 425,022.50
  5. Step 5: Solve for x
    x = 425,022.50/515.06
  6. Step 6: Final answer
    x = 825.19

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.