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Finding the Fourth Proportional to 434.18, 650.36 and 396.83

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Solution

The fourth proportional to 434.18, 650.36 and 396.83 is: 594.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.18 : 650.36 = 396.83 : x
  2. Step 2: Convert to fraction form
    434.18/650.36 = 396.83/x
  3. Step 3: Cross multiply
    434.18x = 650.36 × 396.83
  4. Step 4: Simplify right side
    434.18x = 258,084.98
  5. Step 5: Solve for x
    x = 258,084.98/434.18
  6. Step 6: Final answer
    x = 594.42

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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.