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Finding the Fourth Proportional to 394.10, 543.71 and 296.27

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Solution

The fourth proportional to 394.10, 543.71 and 296.27 is: 408.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.10 : 543.71 = 296.27 : x
  2. Step 2: Convert to fraction form
    394.10/543.71 = 296.27/x
  3. Step 3: Cross multiply
    394.10x = 543.71 × 296.27
  4. Step 4: Simplify right side
    394.10x = 161,083.48
  5. Step 5: Solve for x
    x = 161,083.48/394.10
  6. Step 6: Final answer
    x = 408.74

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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.