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Finding the Fourth Proportional to 272.36, 408.27 and 135.34

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Solution

The fourth proportional to 272.36, 408.27 and 135.34 is: 202.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.36 : 408.27 = 135.34 : x
  2. Step 2: Convert to fraction form
    272.36/408.27 = 135.34/x
  3. Step 3: Cross multiply
    272.36x = 408.27 × 135.34
  4. Step 4: Simplify right side
    272.36x = 55,254.75
  5. Step 5: Solve for x
    x = 55,254.75/272.36
  6. Step 6: Final answer
    x = 202.87

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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.