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Finding the Third Proportional to 320.75 and 341.75

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Solution

The third proportional to 320.75 and 341.75 is: 364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.75 : 341.75 = 341.75 : x
  2. Step 2: Convert to fraction form
    320.75/341.75 = 341.75/x
  3. Step 3: Cross multiply
    320.75x = 341.75 × 341.75
  4. Step 4: Simplify right side
    320.75x = 116,793.06
  5. Step 5: Solve for x
    x = 116,793.06/320.75
  6. Step 6: Final answer
    x = 364.12

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.