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Finding the Fourth Proportional to 220.31, 330.67 and 183.98

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Solution

The fourth proportional to 220.31, 330.67 and 183.98 is: 276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.31 : 330.67 = 183.98 : x
  2. Step 2: Convert to fraction form
    220.31/330.67 = 183.98/x
  3. Step 3: Cross multiply
    220.31x = 330.67 × 183.98
  4. Step 4: Simplify right side
    220.31x = 60,835.84
  5. Step 5: Solve for x
    x = 60,835.84/220.31
  6. Step 6: Final answer
    x = 276.13

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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.