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Finding the Fourth Proportional to 219.90, 331.14 and 183.66

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Solution

The fourth proportional to 219.90, 331.14 and 183.66 is: 276.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.90 : 331.14 = 183.66 : x
  2. Step 2: Convert to fraction form
    219.90/331.14 = 183.66/x
  3. Step 3: Cross multiply
    219.90x = 331.14 × 183.66
  4. Step 4: Simplify right side
    219.90x = 60,817.17
  5. Step 5: Solve for x
    x = 60,817.17/219.90
  6. Step 6: Final answer
    x = 276.57

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.