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Finding the Fourth Proportional to 219.98, 329.96 and 57.67

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Solution

The fourth proportional to 219.98, 329.96 and 57.67 is: 86.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.98 : 329.96 = 57.67 : x
  2. Step 2: Convert to fraction form
    219.98/329.96 = 57.67/x
  3. Step 3: Cross multiply
    219.98x = 329.96 × 57.67
  4. Step 4: Simplify right side
    219.98x = 19,028.11
  5. Step 5: Solve for x
    x = 19,028.11/219.98
  6. Step 6: Final answer
    x = 86.50

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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.