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Finding the Fourth Proportional to 236.10, 352.75 and 231.78

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Solution

The fourth proportional to 236.10, 352.75 and 231.78 is: 346.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.10 : 352.75 = 231.78 : x
  2. Step 2: Convert to fraction form
    236.10/352.75 = 231.78/x
  3. Step 3: Cross multiply
    236.10x = 352.75 × 231.78
  4. Step 4: Simplify right side
    236.10x = 81,760.40
  5. Step 5: Solve for x
    x = 81,760.40/236.10
  6. Step 6: Final answer
    x = 346.30

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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.