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Finding the Third Proportional to 746.72 and 998.58

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Solution

The third proportional to 746.72 and 998.58 is: 1,335.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.72 : 998.58 = 998.58 : x
  2. Step 2: Convert to fraction form
    746.72/998.58 = 998.58/x
  3. Step 3: Cross multiply
    746.72x = 998.58 × 998.58
  4. Step 4: Simplify right side
    746.72x = 997,158.27
  5. Step 5: Solve for x
    x = 997,158.27/746.72
  6. Step 6: Final answer
    x = 1,335.39

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.