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Finding the Fourth Proportional to 474.72, 655.14 and 327.42

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Solution

The fourth proportional to 474.72, 655.14 and 327.42 is: 451.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.72 : 655.14 = 327.42 : x
  2. Step 2: Convert to fraction form
    474.72/655.14 = 327.42/x
  3. Step 3: Cross multiply
    474.72x = 655.14 × 327.42
  4. Step 4: Simplify right side
    474.72x = 214,505.94
  5. Step 5: Solve for x
    x = 214,505.94/474.72
  6. Step 6: Final answer
    x = 451.86

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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.