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Finding the Fourth Proportional to 239.67, 330.77 and 141.46

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Solution

The fourth proportional to 239.67, 330.77 and 141.46 is: 195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.67 : 330.77 = 141.46 : x
  2. Step 2: Convert to fraction form
    239.67/330.77 = 141.46/x
  3. Step 3: Cross multiply
    239.67x = 330.77 × 141.46
  4. Step 4: Simplify right side
    239.67x = 46,790.72
  5. Step 5: Solve for x
    x = 46,790.72/239.67
  6. Step 6: Final answer
    x = 195.23

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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.