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Finding the Fourth Proportional to 220.00, 329.49 and 191.35

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Solution

The fourth proportional to 220.00, 329.49 and 191.35 is: 286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.00 : 329.49 = 191.35 : x
  2. Step 2: Convert to fraction form
    220.00/329.49 = 191.35/x
  3. Step 3: Cross multiply
    220.00x = 329.49 × 191.35
  4. Step 4: Simplify right side
    220.00x = 63,047.09
  5. Step 5: Solve for x
    x = 63,047.09/220.00
  6. Step 6: Final answer
    x = 286.58

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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.