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Finding the Fourth Proportional to 400.07, 599.96 and 122.31

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Solution

The fourth proportional to 400.07, 599.96 and 122.31 is: 183.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.07 : 599.96 = 122.31 : x
  2. Step 2: Convert to fraction form
    400.07/599.96 = 122.31/x
  3. Step 3: Cross multiply
    400.07x = 599.96 × 122.31
  4. Step 4: Simplify right side
    400.07x = 73,380.50
  5. Step 5: Solve for x
    x = 73,380.50/400.07
  6. Step 6: Final answer
    x = 183.42

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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.