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Finding the Fourth Proportional to 327.45, 451.87 and 209.26

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Solution

The fourth proportional to 327.45, 451.87 and 209.26 is: 288.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.45 : 451.87 = 209.26 : x
  2. Step 2: Convert to fraction form
    327.45/451.87 = 209.26/x
  3. Step 3: Cross multiply
    327.45x = 451.87 × 209.26
  4. Step 4: Simplify right side
    327.45x = 94,556.66
  5. Step 5: Solve for x
    x = 94,556.66/327.45
  6. Step 6: Final answer
    x = 288.77

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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.