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Finding the Third Proportional to 665.63 and 936.75

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Solution

The third proportional to 665.63 and 936.75 is: 1,318.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.63 : 936.75 = 936.75 : x
  2. Step 2: Convert to fraction form
    665.63/936.75 = 936.75/x
  3. Step 3: Cross multiply
    665.63x = 936.75 × 936.75
  4. Step 4: Simplify right side
    665.63x = 877,500.56
  5. Step 5: Solve for x
    x = 877,500.56/665.63
  6. Step 6: Final answer
    x = 1,318.31

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.