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Finding the Fourth Proportional to 220.28, 303.75 and 171.05

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Solution

The fourth proportional to 220.28, 303.75 and 171.05 is: 235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.28 : 303.75 = 171.05 : x
  2. Step 2: Convert to fraction form
    220.28/303.75 = 171.05/x
  3. Step 3: Cross multiply
    220.28x = 303.75 × 171.05
  4. Step 4: Simplify right side
    220.28x = 51,954.92
  5. Step 5: Solve for x
    x = 51,954.92/220.28
  6. Step 6: Final answer
    x = 235.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.