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Finding the Fourth Proportional to 238.49, 329.05 and 140.23

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Solution

The fourth proportional to 238.49, 329.05 and 140.23 is: 193.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.49 : 329.05 = 140.23 : x
  2. Step 2: Convert to fraction form
    238.49/329.05 = 140.23/x
  3. Step 3: Cross multiply
    238.49x = 329.05 × 140.23
  4. Step 4: Simplify right side
    238.49x = 46,142.21
  5. Step 5: Solve for x
    x = 46,142.21/238.49
  6. Step 6: Final answer
    x = 193.47

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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.