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Finding the Fourth Proportional to 943.43, 1,301.90 and 629.27

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Solution

The fourth proportional to 943.43, 1,301.90 and 629.27 is: 868.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.43 : 1,301.90 = 629.27 : x
  2. Step 2: Convert to fraction form
    943.43/1,301.90 = 629.27/x
  3. Step 3: Cross multiply
    943.43x = 1,301.90 × 629.27
  4. Step 4: Simplify right side
    943.43x = 819,236.96
  5. Step 5: Solve for x
    x = 819,236.96/943.43
  6. Step 6: Final answer
    x = 868.36

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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.