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Finding the Third Proportional to 631.25 and 1,354.75

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Solution

The third proportional to 631.25 and 1,354.75 is: 2,907.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.25 : 1,354.75 = 1,354.75 : x
  2. Step 2: Convert to fraction form
    631.25/1,354.75 = 1,354.75/x
  3. Step 3: Cross multiply
    631.25x = 1,354.75 × 1,354.75
  4. Step 4: Simplify right side
    631.25x = 1,835,347.56
  5. Step 5: Solve for x
    x = 1,835,347.56/631.25
  6. Step 6: Final answer
    x = 2,907.48

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.