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Finding the Third Proportional to 160.78 and 345.75

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Solution

The third proportional to 160.78 and 345.75 is: 743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.78 : 345.75 = 345.75 : x
  2. Step 2: Convert to fraction form
    160.78/345.75 = 345.75/x
  3. Step 3: Cross multiply
    160.78x = 345.75 × 345.75
  4. Step 4: Simplify right side
    160.78x = 119,543.06
  5. Step 5: Solve for x
    x = 119,543.06/160.78
  6. Step 6: Final answer
    x = 743.51

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.