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Finding the Fourth Proportional to 236.48, 352.42 and 222.56

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Solution

The fourth proportional to 236.48, 352.42 and 222.56 is: 331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.48 : 352.42 = 222.56 : x
  2. Step 2: Convert to fraction form
    236.48/352.42 = 222.56/x
  3. Step 3: Cross multiply
    236.48x = 352.42 × 222.56
  4. Step 4: Simplify right side
    236.48x = 78,434.60
  5. Step 5: Solve for x
    x = 78,434.60/236.48
  6. Step 6: Final answer
    x = 331.68

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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.