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Finding the Third Proportional to 471.75 and 684.38

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Solution

The third proportional to 471.75 and 684.38 is: 992.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.75 : 684.38 = 684.38 : x
  2. Step 2: Convert to fraction form
    471.75/684.38 = 684.38/x
  3. Step 3: Cross multiply
    471.75x = 684.38 × 684.38
  4. Step 4: Simplify right side
    471.75x = 468,369.14
  5. Step 5: Solve for x
    x = 468,369.14/471.75
  6. Step 6: Final answer
    x = 992.83

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.