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Finding the Fourth Proportional to 394.12, 542.46 and 362.26

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Solution

The fourth proportional to 394.12, 542.46 and 362.26 is: 498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.12 : 542.46 = 362.26 : x
  2. Step 2: Convert to fraction form
    394.12/542.46 = 362.26/x
  3. Step 3: Cross multiply
    394.12x = 542.46 × 362.26
  4. Step 4: Simplify right side
    394.12x = 196,511.56
  5. Step 5: Solve for x
    x = 196,511.56/394.12
  6. Step 6: Final answer
    x = 498.61

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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.