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Finding the Fourth Proportional to 392.19, 541.17 and 234.79

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Solution

The fourth proportional to 392.19, 541.17 and 234.79 is: 323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.19 : 541.17 = 234.79 : x
  2. Step 2: Convert to fraction form
    392.19/541.17 = 234.79/x
  3. Step 3: Cross multiply
    392.19x = 541.17 × 234.79
  4. Step 4: Simplify right side
    392.19x = 127,059.36
  5. Step 5: Solve for x
    x = 127,059.36/392.19
  6. Step 6: Final answer
    x = 323.97

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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.