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Finding the Fourth Proportional to 238.82, 356.47 and 236.79

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Solution

The fourth proportional to 238.82, 356.47 and 236.79 is: 353.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.82 : 356.47 = 236.79 : x
  2. Step 2: Convert to fraction form
    238.82/356.47 = 236.79/x
  3. Step 3: Cross multiply
    238.82x = 356.47 × 236.79
  4. Step 4: Simplify right side
    238.82x = 84,407.94
  5. Step 5: Solve for x
    x = 84,407.94/238.82
  6. Step 6: Final answer
    x = 353.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.