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Finding the Fourth Proportional to 303.90, 453.11 and 298.43

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Solution

The fourth proportional to 303.90, 453.11 and 298.43 is: 444.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.90 : 453.11 = 298.43 : x
  2. Step 2: Convert to fraction form
    303.90/453.11 = 298.43/x
  3. Step 3: Cross multiply
    303.90x = 453.11 × 298.43
  4. Step 4: Simplify right side
    303.90x = 135,221.62
  5. Step 5: Solve for x
    x = 135,221.62/303.90
  6. Step 6: Final answer
    x = 444.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.