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Finding the Fourth Proportional to 235.37, 321.93 and 231.59

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Solution

The fourth proportional to 235.37, 321.93 and 231.59 is: 316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.37 : 321.93 = 231.59 : x
  2. Step 2: Convert to fraction form
    235.37/321.93 = 231.59/x
  3. Step 3: Cross multiply
    235.37x = 321.93 × 231.59
  4. Step 4: Simplify right side
    235.37x = 74,554.16
  5. Step 5: Solve for x
    x = 74,554.16/235.37
  6. Step 6: Final answer
    x = 316.76

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.