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Finding the Fourth Proportional to 236.19, 352.32 and 215.22

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Solution

The fourth proportional to 236.19, 352.32 and 215.22 is: 321.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.19 : 352.32 = 215.22 : x
  2. Step 2: Convert to fraction form
    236.19/352.32 = 215.22/x
  3. Step 3: Cross multiply
    236.19x = 352.32 × 215.22
  4. Step 4: Simplify right side
    236.19x = 75,826.31
  5. Step 5: Solve for x
    x = 75,826.31/236.19
  6. Step 6: Final answer
    x = 321.04

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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.