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Finding the Fourth Proportional to 239.63, 330.39 and 165.92

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Solution

The fourth proportional to 239.63, 330.39 and 165.92 is: 228.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.63 : 330.39 = 165.92 : x
  2. Step 2: Convert to fraction form
    239.63/330.39 = 165.92/x
  3. Step 3: Cross multiply
    239.63x = 330.39 × 165.92
  4. Step 4: Simplify right side
    239.63x = 54,816.66
  5. Step 5: Solve for x
    x = 54,816.66/239.63
  6. Step 6: Final answer
    x = 228.76

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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.