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Finding the Third Proportional to 657.56 and 745.31

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Solution

The third proportional to 657.56 and 745.31 is: 844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.56 : 745.31 = 745.31 : x
  2. Step 2: Convert to fraction form
    657.56/745.31 = 745.31/x
  3. Step 3: Cross multiply
    657.56x = 745.31 × 745.31
  4. Step 4: Simplify right side
    657.56x = 555,490.72
  5. Step 5: Solve for x
    x = 555,490.72/657.56
  6. Step 6: Final answer
    x = 844.77

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.