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Finding the Fourth Proportional to 298.70, 447.86 and 125.36

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Solution

The fourth proportional to 298.70, 447.86 and 125.36 is: 187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.70 : 447.86 = 125.36 : x
  2. Step 2: Convert to fraction form
    298.70/447.86 = 125.36/x
  3. Step 3: Cross multiply
    298.70x = 447.86 × 125.36
  4. Step 4: Simplify right side
    298.70x = 56,143.73
  5. Step 5: Solve for x
    x = 56,143.73/298.70
  6. Step 6: Final answer
    x = 187.96

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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.