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Finding the Fourth Proportional to 394.11, 545.15 and 367.52

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Solution

The fourth proportional to 394.11, 545.15 and 367.52 is: 508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.11 : 545.15 = 367.52 : x
  2. Step 2: Convert to fraction form
    394.11/545.15 = 367.52/x
  3. Step 3: Cross multiply
    394.11x = 545.15 × 367.52
  4. Step 4: Simplify right side
    394.11x = 200,351.72
  5. Step 5: Solve for x
    x = 200,351.72/394.11
  6. Step 6: Final answer
    x = 508.36

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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.