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Finding the Fourth Proportional to 238.49, 329.14 and 154.52

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Solution

The fourth proportional to 238.49, 329.14 and 154.52 is: 213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.49 : 329.14 = 154.52 : x
  2. Step 2: Convert to fraction form
    238.49/329.14 = 154.52/x
  3. Step 3: Cross multiply
    238.49x = 329.14 × 154.52
  4. Step 4: Simplify right side
    238.49x = 50,858.71
  5. Step 5: Solve for x
    x = 50,858.71/238.49
  6. Step 6: Final answer
    x = 213.25

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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.