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Finding the Fourth Proportional to 219.09, 329.93 and 197.67

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Solution

The fourth proportional to 219.09, 329.93 and 197.67 is: 297.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.09 : 329.93 = 197.67 : x
  2. Step 2: Convert to fraction form
    219.09/329.93 = 197.67/x
  3. Step 3: Cross multiply
    219.09x = 329.93 × 197.67
  4. Step 4: Simplify right side
    219.09x = 65,217.26
  5. Step 5: Solve for x
    x = 65,217.26/219.09
  6. Step 6: Final answer
    x = 297.67

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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.