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Finding the Fourth Proportional to 327, 451.26 and 210.66

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Solution

The fourth proportional to 327, 451.26 and 210.66 is: 290.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    327 : 451.26 = 210.66 : x
  2. Step 2: Convert to fraction form
    327/451.26 = 210.66/x
  3. Step 3: Cross multiply
    327x = 451.26 × 210.66
  4. Step 4: Simplify right side
    327x = 95,062.43
  5. Step 5: Solve for x
    x = 95,062.43/327
  6. Step 6: Final answer
    x = 290.71

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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.