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Finding the Fourth Proportional to 474.70, 654.96 and 327.46

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Solution

The fourth proportional to 474.70, 654.96 and 327.46 is: 451.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.70 : 654.96 = 327.46 : x
  2. Step 2: Convert to fraction form
    474.70/654.96 = 327.46/x
  3. Step 3: Cross multiply
    474.70x = 654.96 × 327.46
  4. Step 4: Simplify right side
    474.70x = 214,473.20
  5. Step 5: Solve for x
    x = 214,473.20/474.70
  6. Step 6: Final answer
    x = 451.81

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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.