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Finding the Third Proportional to 746 and 1,139

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Solution

The third proportional to 746 and 1,139 is: 1,739.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    746 : 1,139 = 1,139 : x
  2. Step 2: Convert to fraction form
    746/1,139 = 1,139/x
  3. Step 3: Cross multiply
    746x = 1,139 × 1,139
  4. Step 4: Simplify right side
    746x = 1,297,321
  5. Step 5: Solve for x
    x = 1,297,321/746
  6. Step 6: Final answer
    x = 1,739.04

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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.