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Finding the Fourth Proportional to 236.88, 353.07 and 231.68

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Solution

The fourth proportional to 236.88, 353.07 and 231.68 is: 345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.88 : 353.07 = 231.68 : x
  2. Step 2: Convert to fraction form
    236.88/353.07 = 231.68/x
  3. Step 3: Cross multiply
    236.88x = 353.07 × 231.68
  4. Step 4: Simplify right side
    236.88x = 81,800.14
  5. Step 5: Solve for x
    x = 81,800.14/236.88
  6. Step 6: Final answer
    x = 345.32

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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.