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Finding the Fourth Proportional to 239.73, 331.44 and 166.59

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Solution

The fourth proportional to 239.73, 331.44 and 166.59 is: 230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.73 : 331.44 = 166.59 : x
  2. Step 2: Convert to fraction form
    239.73/331.44 = 166.59/x
  3. Step 3: Cross multiply
    239.73x = 331.44 × 166.59
  4. Step 4: Simplify right side
    239.73x = 55,214.59
  5. Step 5: Solve for x
    x = 55,214.59/239.73
  6. Step 6: Final answer
    x = 230.32

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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.