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Finding the Fourth Proportional to 236.44, 326.12 and 153.64

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Solution

The fourth proportional to 236.44, 326.12 and 153.64 is: 211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.44 : 326.12 = 153.64 : x
  2. Step 2: Convert to fraction form
    236.44/326.12 = 153.64/x
  3. Step 3: Cross multiply
    236.44x = 326.12 × 153.64
  4. Step 4: Simplify right side
    236.44x = 50,105.08
  5. Step 5: Solve for x
    x = 50,105.08/236.44
  6. Step 6: Final answer
    x = 211.91

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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.