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Finding the Fourth Proportional to 399.04, 550.51 and 232.97

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Solution

The fourth proportional to 399.04, 550.51 and 232.97 is: 321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.04 : 550.51 = 232.97 : x
  2. Step 2: Convert to fraction form
    399.04/550.51 = 232.97/x
  3. Step 3: Cross multiply
    399.04x = 550.51 × 232.97
  4. Step 4: Simplify right side
    399.04x = 128,250.28
  5. Step 5: Solve for x
    x = 128,250.28/399.04
  6. Step 6: Final answer
    x = 321.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.