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Finding the Fourth Proportional to 466.17, 644.04 and 396.96

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Solution

The fourth proportional to 466.17, 644.04 and 396.96 is: 548.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.17 : 644.04 = 396.96 : x
  2. Step 2: Convert to fraction form
    466.17/644.04 = 396.96/x
  3. Step 3: Cross multiply
    466.17x = 644.04 × 396.96
  4. Step 4: Simplify right side
    466.17x = 255,658.12
  5. Step 5: Solve for x
    x = 255,658.12/466.17
  6. Step 6: Final answer
    x = 548.42

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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.