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Finding the Fourth Proportional to 236.66, 353.11 and 231.18

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Solution

The fourth proportional to 236.66, 353.11 and 231.18 is: 344.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.66 : 353.11 = 231.18 : x
  2. Step 2: Convert to fraction form
    236.66/353.11 = 231.18/x
  3. Step 3: Cross multiply
    236.66x = 353.11 × 231.18
  4. Step 4: Simplify right side
    236.66x = 81,631.97
  5. Step 5: Solve for x
    x = 81,631.97/236.66
  6. Step 6: Final answer
    x = 344.93

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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.