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Finding the Third Proportional to 665.25 and 1,021.13

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Solution

The third proportional to 665.25 and 1,021.13 is: 1,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.25 : 1,021.13 = 1,021.13 : x
  2. Step 2: Convert to fraction form
    665.25/1,021.13 = 1,021.13/x
  3. Step 3: Cross multiply
    665.25x = 1,021.13 × 1,021.13
  4. Step 4: Simplify right side
    665.25x = 1,042,696.27
  5. Step 5: Solve for x
    x = 1,042,696.27/665.25
  6. Step 6: Final answer
    x = 1,567.38

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.