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Finding the Fourth Proportional to 236.22, 353.72 and 144.68

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Solution

The fourth proportional to 236.22, 353.72 and 144.68 is: 216.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.22 : 353.72 = 144.68 : x
  2. Step 2: Convert to fraction form
    236.22/353.72 = 144.68/x
  3. Step 3: Cross multiply
    236.22x = 353.72 × 144.68
  4. Step 4: Simplify right side
    236.22x = 51,176.21
  5. Step 5: Solve for x
    x = 51,176.21/236.22
  6. Step 6: Final answer
    x = 216.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.