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Finding the Fourth Proportional to 325.30, 448.58 and 231.88

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Solution

The fourth proportional to 325.30, 448.58 and 231.88 is: 319.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.30 : 448.58 = 231.88 : x
  2. Step 2: Convert to fraction form
    325.30/448.58 = 231.88/x
  3. Step 3: Cross multiply
    325.30x = 448.58 × 231.88
  4. Step 4: Simplify right side
    325.30x = 104,016.73
  5. Step 5: Solve for x
    x = 104,016.73/325.30
  6. Step 6: Final answer
    x = 319.76

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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.