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Finding the Fourth Proportional to 400.01, 599.91 and 126.05

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Solution

The fourth proportional to 400.01, 599.91 and 126.05 is: 189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.01 : 599.91 = 126.05 : x
  2. Step 2: Convert to fraction form
    400.01/599.91 = 126.05/x
  3. Step 3: Cross multiply
    400.01x = 599.91 × 126.05
  4. Step 4: Simplify right side
    400.01x = 75,615.89
  5. Step 5: Solve for x
    x = 75,615.89/400.01
  6. Step 6: Final answer
    x = 189.04

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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.