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Finding the Fourth Proportional to 238.84, 331.37 and 236.68

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Solution

The fourth proportional to 238.84, 331.37 and 236.68 is: 328.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.84 : 331.37 = 236.68 : x
  2. Step 2: Convert to fraction form
    238.84/331.37 = 236.68/x
  3. Step 3: Cross multiply
    238.84x = 331.37 × 236.68
  4. Step 4: Simplify right side
    238.84x = 78,428.65
  5. Step 5: Solve for x
    x = 78,428.65/238.84
  6. Step 6: Final answer
    x = 328.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.