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Finding the Fourth Proportional to 629.73, 943.90 and 239.36

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Solution

The fourth proportional to 629.73, 943.90 and 239.36 is: 358.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.73 : 943.90 = 239.36 : x
  2. Step 2: Convert to fraction form
    629.73/943.90 = 239.36/x
  3. Step 3: Cross multiply
    629.73x = 943.90 × 239.36
  4. Step 4: Simplify right side
    629.73x = 225,926.59
  5. Step 5: Solve for x
    x = 225,926.59/629.73
  6. Step 6: Final answer
    x = 358.77

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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.