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Finding the Fourth Proportional to 303.20, 453.48 and 298.88

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Solution

The fourth proportional to 303.20, 453.48 and 298.88 is: 447.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.20 : 453.48 = 298.88 : x
  2. Step 2: Convert to fraction form
    303.20/453.48 = 298.88/x
  3. Step 3: Cross multiply
    303.20x = 453.48 × 298.88
  4. Step 4: Simplify right side
    303.20x = 135,536.10
  5. Step 5: Solve for x
    x = 135,536.10/303.20
  6. Step 6: Final answer
    x = 447.02

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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.