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Finding the Fourth Proportional to 361.32, 543.66 and 327.72

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Solution

The fourth proportional to 361.32, 543.66 and 327.72 is: 493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.32 : 543.66 = 327.72 : x
  2. Step 2: Convert to fraction form
    361.32/543.66 = 327.72/x
  3. Step 3: Cross multiply
    361.32x = 543.66 × 327.72
  4. Step 4: Simplify right side
    361.32x = 178,168.26
  5. Step 5: Solve for x
    x = 178,168.26/361.32
  6. Step 6: Final answer
    x = 493.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.