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Finding the Third Proportional to 774.25 and 1,629.25

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Solution

The third proportional to 774.25 and 1,629.25 is: 3,428.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.25 : 1,629.25 = 1,629.25 : x
  2. Step 2: Convert to fraction form
    774.25/1,629.25 = 1,629.25/x
  3. Step 3: Cross multiply
    774.25x = 1,629.25 × 1,629.25
  4. Step 4: Simplify right side
    774.25x = 2,654,455.56
  5. Step 5: Solve for x
    x = 2,654,455.56/774.25
  6. Step 6: Final answer
    x = 3,428.42

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.