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Finding the Fourth Proportional to 303.13, 417.85 and 219.97

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Solution

The fourth proportional to 303.13, 417.85 and 219.97 is: 303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.13 : 417.85 = 219.97 : x
  2. Step 2: Convert to fraction form
    303.13/417.85 = 219.97/x
  3. Step 3: Cross multiply
    303.13x = 417.85 × 219.97
  4. Step 4: Simplify right side
    303.13x = 91,914.46
  5. Step 5: Solve for x
    x = 91,914.46/303.13
  6. Step 6: Final answer
    x = 303.22

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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.