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Finding the Fourth Proportional to 466.44, 643.33 and 438.09

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Solution

The fourth proportional to 466.44, 643.33 and 438.09 is: 604.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.44 : 643.33 = 438.09 : x
  2. Step 2: Convert to fraction form
    466.44/643.33 = 438.09/x
  3. Step 3: Cross multiply
    466.44x = 643.33 × 438.09
  4. Step 4: Simplify right side
    466.44x = 281,836.44
  5. Step 5: Solve for x
    x = 281,836.44/466.44
  6. Step 6: Final answer
    x = 604.23

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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.