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Finding the Third Proportional to 400.99 and 850.92

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Solution

The third proportional to 400.99 and 850.92 is: 1,805.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.99 : 850.92 = 850.92 : x
  2. Step 2: Convert to fraction form
    400.99/850.92 = 850.92/x
  3. Step 3: Cross multiply
    400.99x = 850.92 × 850.92
  4. Step 4: Simplify right side
    400.99x = 724,068.04
  5. Step 5: Solve for x
    x = 724,068.04/400.99
  6. Step 6: Final answer
    x = 1,805.69

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.