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Finding the Fourth Proportional to 272.02, 408.04 and 270.40

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Solution

The fourth proportional to 272.02, 408.04 and 270.40 is: 405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.02 : 408.04 = 270.40 : x
  2. Step 2: Convert to fraction form
    272.02/408.04 = 270.40/x
  3. Step 3: Cross multiply
    272.02x = 408.04 × 270.40
  4. Step 4: Simplify right side
    272.02x = 110,334.02
  5. Step 5: Solve for x
    x = 110,334.02/272.02
  6. Step 6: Final answer
    x = 405.61

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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.