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Finding the Fourth Proportional to 327.08, 451.32 and 187.20

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Solution

The fourth proportional to 327.08, 451.32 and 187.20 is: 258.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.08 : 451.32 = 187.20 : x
  2. Step 2: Convert to fraction form
    327.08/451.32 = 187.20/x
  3. Step 3: Cross multiply
    327.08x = 451.32 × 187.20
  4. Step 4: Simplify right side
    327.08x = 84,487.10
  5. Step 5: Solve for x
    x = 84,487.10/327.08
  6. Step 6: Final answer
    x = 258.31

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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.