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Finding the Fourth Proportional to 1,446.46, 1,996.26 and 817.12

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Solution

The fourth proportional to 1,446.46, 1,996.26 and 817.12 is: 1,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.46 : 1,996.26 = 817.12 : x
  2. Step 2: Convert to fraction form
    1,446.46/1,996.26 = 817.12/x
  3. Step 3: Cross multiply
    1,446.46x = 1,996.26 × 817.12
  4. Step 4: Simplify right side
    1,446.46x = 1,631,183.97
  5. Step 5: Solve for x
    x = 1,631,183.97/1,446.46
  6. Step 6: Final answer
    x = 1,127.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.