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Finding the Fourth Proportional to 239.18, 330.06 and 140.93

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Solution

The fourth proportional to 239.18, 330.06 and 140.93 is: 194.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.18 : 330.06 = 140.93 : x
  2. Step 2: Convert to fraction form
    239.18/330.06 = 140.93/x
  3. Step 3: Cross multiply
    239.18x = 330.06 × 140.93
  4. Step 4: Simplify right side
    239.18x = 46,513.71
  5. Step 5: Solve for x
    x = 46,513.71/239.18
  6. Step 6: Final answer
    x = 194.48

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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.