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Finding the Fourth Proportional to 392.75, 541.89 and 226.95

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Solution

The fourth proportional to 392.75, 541.89 and 226.95 is: 313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.75 : 541.89 = 226.95 : x
  2. Step 2: Convert to fraction form
    392.75/541.89 = 226.95/x
  3. Step 3: Cross multiply
    392.75x = 541.89 × 226.95
  4. Step 4: Simplify right side
    392.75x = 122,982.95
  5. Step 5: Solve for x
    x = 122,982.95/392.75
  6. Step 6: Final answer
    x = 313.13

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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.