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Finding the Fourth Proportional to 220.83, 331.47 and 134.37

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Solution

The fourth proportional to 220.83, 331.47 and 134.37 is: 201.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.83 : 331.47 = 134.37 : x
  2. Step 2: Convert to fraction form
    220.83/331.47 = 134.37/x
  3. Step 3: Cross multiply
    220.83x = 331.47 × 134.37
  4. Step 4: Simplify right side
    220.83x = 44,539.62
  5. Step 5: Solve for x
    x = 44,539.62/220.83
  6. Step 6: Final answer
    x = 201.69

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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.