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Finding the Fourth Proportional to 504.20, 755.76 and 298.73

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Solution

The fourth proportional to 504.20, 755.76 and 298.73 is: 447.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.20 : 755.76 = 298.73 : x
  2. Step 2: Convert to fraction form
    504.20/755.76 = 298.73/x
  3. Step 3: Cross multiply
    504.20x = 755.76 × 298.73
  4. Step 4: Simplify right side
    504.20x = 225,768.18
  5. Step 5: Solve for x
    x = 225,768.18/504.20
  6. Step 6: Final answer
    x = 447.78

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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.