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Finding the Fourth Proportional to 236.60, 325.86 and 231.08

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Solution

The fourth proportional to 236.60, 325.86 and 231.08 is: 318.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.60 : 325.86 = 231.08 : x
  2. Step 2: Convert to fraction form
    236.60/325.86 = 231.08/x
  3. Step 3: Cross multiply
    236.60x = 325.86 × 231.08
  4. Step 4: Simplify right side
    236.60x = 75,299.73
  5. Step 5: Solve for x
    x = 75,299.73/236.60
  6. Step 6: Final answer
    x = 318.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.