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Finding the Fourth Proportional to 1,447.28, 1,996.70 and 950.19

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Solution

The fourth proportional to 1,447.28, 1,996.70 and 950.19 is: 1,310.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.28 : 1,996.70 = 950.19 : x
  2. Step 2: Convert to fraction form
    1,447.28/1,996.70 = 950.19/x
  3. Step 3: Cross multiply
    1,447.28x = 1,996.70 × 950.19
  4. Step 4: Simplify right side
    1,447.28x = 1,897,244.37
  5. Step 5: Solve for x
    x = 1,897,244.37/1,447.28
  6. Step 6: Final answer
    x = 1,310.91

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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.