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Finding the Third Proportional to 628.13 and 976.03

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Solution

The third proportional to 628.13 and 976.03 is: 1,516.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.13 : 976.03 = 976.03 : x
  2. Step 2: Convert to fraction form
    628.13/976.03 = 976.03/x
  3. Step 3: Cross multiply
    628.13x = 976.03 × 976.03
  4. Step 4: Simplify right side
    628.13x = 952,637.00
  5. Step 5: Solve for x
    x = 952,637.00/628.13
  6. Step 6: Final answer
    x = 1,516.64

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Why These Related Problems?

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