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Finding the Fourth Proportional to 481.12, 722.13 and 298.87

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Solution

The fourth proportional to 481.12, 722.13 and 298.87 is: 448.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.12 : 722.13 = 298.87 : x
  2. Step 2: Convert to fraction form
    481.12/722.13 = 298.87/x
  3. Step 3: Cross multiply
    481.12x = 722.13 × 298.87
  4. Step 4: Simplify right side
    481.12x = 215,819.38
  5. Step 5: Solve for x
    x = 215,819.38/481.12
  6. Step 6: Final answer
    x = 448.58

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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.