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Finding the Fourth Proportional to 403.30, 604.02 and 396.62

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Solution

The fourth proportional to 403.30, 604.02 and 396.62 is: 594.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.30 : 604.02 = 396.62 : x
  2. Step 2: Convert to fraction form
    403.30/604.02 = 396.62/x
  3. Step 3: Cross multiply
    403.30x = 604.02 × 396.62
  4. Step 4: Simplify right side
    403.30x = 239,566.41
  5. Step 5: Solve for x
    x = 239,566.41/403.30
  6. Step 6: Final answer
    x = 594.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.