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Finding the Fourth Proportional to 236.12, 326.58 and 223.98

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Solution

The fourth proportional to 236.12, 326.58 and 223.98 is: 309.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.12 : 326.58 = 223.98 : x
  2. Step 2: Convert to fraction form
    236.12/326.58 = 223.98/x
  3. Step 3: Cross multiply
    236.12x = 326.58 × 223.98
  4. Step 4: Simplify right side
    236.12x = 73,147.39
  5. Step 5: Solve for x
    x = 73,147.39/236.12
  6. Step 6: Final answer
    x = 309.79

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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.