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Finding the Fourth Proportional to 325.65, 449.60 and 252.15

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Solution

The fourth proportional to 325.65, 449.60 and 252.15 is: 348.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.65 : 449.60 = 252.15 : x
  2. Step 2: Convert to fraction form
    325.65/449.60 = 252.15/x
  3. Step 3: Cross multiply
    325.65x = 449.60 × 252.15
  4. Step 4: Simplify right side
    325.65x = 113,365.38
  5. Step 5: Solve for x
    x = 113,365.38/325.65
  6. Step 6: Final answer
    x = 348.12

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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.