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Finding the Fourth Proportional to 327.02, 451.31 and 187.18

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Solution

The fourth proportional to 327.02, 451.31 and 187.18 is: 258.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.02 : 451.31 = 187.18 : x
  2. Step 2: Convert to fraction form
    327.02/451.31 = 187.18/x
  3. Step 3: Cross multiply
    327.02x = 451.31 × 187.18
  4. Step 4: Simplify right side
    327.02x = 84,475.19
  5. Step 5: Solve for x
    x = 84,475.19/327.02
  6. Step 6: Final answer
    x = 258.32

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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.