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Finding the Third Proportional to 336.25 and 365.25

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Solution

The third proportional to 336.25 and 365.25 is: 396.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.25 : 365.25 = 365.25 : x
  2. Step 2: Convert to fraction form
    336.25/365.25 = 365.25/x
  3. Step 3: Cross multiply
    336.25x = 365.25 × 365.25
  4. Step 4: Simplify right side
    336.25x = 133,407.56
  5. Step 5: Solve for x
    x = 133,407.56/336.25
  6. Step 6: Final answer
    x = 396.75

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.