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Finding the Third Proportional to 155.67 and 335.39

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Solution

The third proportional to 155.67 and 335.39 is: 722.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.67 : 335.39 = 335.39 : x
  2. Step 2: Convert to fraction form
    155.67/335.39 = 335.39/x
  3. Step 3: Cross multiply
    155.67x = 335.39 × 335.39
  4. Step 4: Simplify right side
    155.67x = 112,486.87
  5. Step 5: Solve for x
    x = 112,486.87/155.67
  6. Step 6: Final answer
    x = 722.59

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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.