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Finding the Fourth Proportional to 399.41, 599.09 and 238.13

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Solution

The fourth proportional to 399.41, 599.09 and 238.13 is: 357.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.41 : 599.09 = 238.13 : x
  2. Step 2: Convert to fraction form
    399.41/599.09 = 238.13/x
  3. Step 3: Cross multiply
    399.41x = 599.09 × 238.13
  4. Step 4: Simplify right side
    399.41x = 142,657.12
  5. Step 5: Solve for x
    x = 142,657.12/399.41
  6. Step 6: Final answer
    x = 357.17

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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.