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Finding the Third Proportional to 628.75 and 958.25

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Solution

The third proportional to 628.75 and 958.25 is: 1,460.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.75 : 958.25 = 958.25 : x
  2. Step 2: Convert to fraction form
    628.75/958.25 = 958.25/x
  3. Step 3: Cross multiply
    628.75x = 958.25 × 958.25
  4. Step 4: Simplify right side
    628.75x = 918,243.06
  5. Step 5: Solve for x
    x = 918,243.06/628.75
  6. Step 6: Final answer
    x = 1,460.43

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.