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Finding the Fourth Proportional to 236.09, 353.04 and 211.79

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Solution

The fourth proportional to 236.09, 353.04 and 211.79 is: 316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.09 : 353.04 = 211.79 : x
  2. Step 2: Convert to fraction form
    236.09/353.04 = 211.79/x
  3. Step 3: Cross multiply
    236.09x = 353.04 × 211.79
  4. Step 4: Simplify right side
    236.09x = 74,768.58
  5. Step 5: Solve for x
    x = 74,768.58/236.09
  6. Step 6: Final answer
    x = 316.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.