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Finding the Fourth Proportional to 399.80, 600.12 and 354.44

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Solution

The fourth proportional to 399.80, 600.12 and 354.44 is: 532.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.80 : 600.12 = 354.44 : x
  2. Step 2: Convert to fraction form
    399.80/600.12 = 354.44/x
  3. Step 3: Cross multiply
    399.80x = 600.12 × 354.44
  4. Step 4: Simplify right side
    399.80x = 212,706.53
  5. Step 5: Solve for x
    x = 212,706.53/399.80
  6. Step 6: Final answer
    x = 532.03

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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.