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Finding the Fourth Proportional to 236.21, 326.07 and 161.54

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Solution

The fourth proportional to 236.21, 326.07 and 161.54 is: 222.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.21 : 326.07 = 161.54 : x
  2. Step 2: Convert to fraction form
    236.21/326.07 = 161.54/x
  3. Step 3: Cross multiply
    236.21x = 326.07 × 161.54
  4. Step 4: Simplify right side
    236.21x = 52,673.35
  5. Step 5: Solve for x
    x = 52,673.35/236.21
  6. Step 6: Final answer
    x = 222.99

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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.