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Finding the Fourth Proportional to 327.47, 451.86 and 187.56

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Solution

The fourth proportional to 327.47, 451.86 and 187.56 is: 258.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.47 : 451.86 = 187.56 : x
  2. Step 2: Convert to fraction form
    327.47/451.86 = 187.56/x
  3. Step 3: Cross multiply
    327.47x = 451.86 × 187.56
  4. Step 4: Simplify right side
    327.47x = 84,752.77
  5. Step 5: Solve for x
    x = 84,752.77/327.47
  6. Step 6: Final answer
    x = 258.81

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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.