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Finding the Fourth Proportional to 629.30, 943.63 and 239.29

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Solution

The fourth proportional to 629.30, 943.63 and 239.29 is: 358.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.30 : 943.63 = 239.29 : x
  2. Step 2: Convert to fraction form
    629.30/943.63 = 239.29/x
  3. Step 3: Cross multiply
    629.30x = 943.63 × 239.29
  4. Step 4: Simplify right side
    629.30x = 225,798.27
  5. Step 5: Solve for x
    x = 225,798.27/629.30
  6. Step 6: Final answer
    x = 358.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.