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Finding the Third Proportional to 637.25 and 1,123.75

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Solution

The third proportional to 637.25 and 1,123.75 is: 1,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.25 : 1,123.75 = 1,123.75 : x
  2. Step 2: Convert to fraction form
    637.25/1,123.75 = 1,123.75/x
  3. Step 3: Cross multiply
    637.25x = 1,123.75 × 1,123.75
  4. Step 4: Simplify right side
    637.25x = 1,262,814.06
  5. Step 5: Solve for x
    x = 1,262,814.06/637.25
  6. Step 6: Final answer
    x = 1,981.66

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.