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Finding the Fourth Proportional to 399.36, 599.06 and 125.48

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Solution

The fourth proportional to 399.36, 599.06 and 125.48 is: 188.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.36 : 599.06 = 125.48 : x
  2. Step 2: Convert to fraction form
    399.36/599.06 = 125.48/x
  3. Step 3: Cross multiply
    399.36x = 599.06 × 125.48
  4. Step 4: Simplify right side
    399.36x = 75,170.05
  5. Step 5: Solve for x
    x = 75,170.05/399.36
  6. Step 6: Final answer
    x = 188.23

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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.