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Finding the Fourth Proportional to 399.91, 552.07 and 234.07

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Solution

The fourth proportional to 399.91, 552.07 and 234.07 is: 323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.91 : 552.07 = 234.07 : x
  2. Step 2: Convert to fraction form
    399.91/552.07 = 234.07/x
  3. Step 3: Cross multiply
    399.91x = 552.07 × 234.07
  4. Step 4: Simplify right side
    399.91x = 129,221.85
  5. Step 5: Solve for x
    x = 129,221.85/399.91
  6. Step 6: Final answer
    x = 323.13

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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.