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Finding the Fourth Proportional to 303.11, 418.44 and 229.76

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Solution

The fourth proportional to 303.11, 418.44 and 229.76 is: 317.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.11 : 418.44 = 229.76 : x
  2. Step 2: Convert to fraction form
    303.11/418.44 = 229.76/x
  3. Step 3: Cross multiply
    303.11x = 418.44 × 229.76
  4. Step 4: Simplify right side
    303.11x = 96,140.77
  5. Step 5: Solve for x
    x = 96,140.77/303.11
  6. Step 6: Final answer
    x = 317.18

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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.