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Finding the Fourth Proportional to 236.09, 352.50 and 221.51

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Solution

The fourth proportional to 236.09, 352.50 and 221.51 is: 330.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.09 : 352.50 = 221.51 : x
  2. Step 2: Convert to fraction form
    236.09/352.50 = 221.51/x
  3. Step 3: Cross multiply
    236.09x = 352.50 × 221.51
  4. Step 4: Simplify right side
    236.09x = 78,081.17
  5. Step 5: Solve for x
    x = 78,081.17/236.09
  6. Step 6: Final answer
    x = 330.73

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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.