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Finding the Fourth Proportional to 325.38, 448.46 and 251.54

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Solution

The fourth proportional to 325.38, 448.46 and 251.54 is: 346.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.38 : 448.46 = 251.54 : x
  2. Step 2: Convert to fraction form
    325.38/448.46 = 251.54/x
  3. Step 3: Cross multiply
    325.38x = 448.46 × 251.54
  4. Step 4: Simplify right side
    325.38x = 112,805.63
  5. Step 5: Solve for x
    x = 112,805.63/325.38
  6. Step 6: Final answer
    x = 346.69

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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.