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Finding the Fourth Proportional to 274.62, 412.10 and 272.43

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Solution

The fourth proportional to 274.62, 412.10 and 272.43 is: 408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.62 : 412.10 = 272.43 : x
  2. Step 2: Convert to fraction form
    274.62/412.10 = 272.43/x
  3. Step 3: Cross multiply
    274.62x = 412.10 × 272.43
  4. Step 4: Simplify right side
    274.62x = 112,269.59
  5. Step 5: Solve for x
    x = 112,269.59/274.62
  6. Step 6: Final answer
    x = 408.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.