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Finding the Fourth Proportional to 401.42, 604.92 and 382.88

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Solution

The fourth proportional to 401.42, 604.92 and 382.88 is: 576.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.42 : 604.92 = 382.88 : x
  2. Step 2: Convert to fraction form
    401.42/604.92 = 382.88/x
  3. Step 3: Cross multiply
    401.42x = 604.92 × 382.88
  4. Step 4: Simplify right side
    401.42x = 231,611.77
  5. Step 5: Solve for x
    x = 231,611.77/401.42
  6. Step 6: Final answer
    x = 576.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.