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Finding the Fourth Proportional to 298.77, 447.84 and 190.59

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Solution

The fourth proportional to 298.77, 447.84 and 190.59 is: 285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.77 : 447.84 = 190.59 : x
  2. Step 2: Convert to fraction form
    298.77/447.84 = 190.59/x
  3. Step 3: Cross multiply
    298.77x = 447.84 × 190.59
  4. Step 4: Simplify right side
    298.77x = 85,353.83
  5. Step 5: Solve for x
    x = 85,353.83/298.77
  6. Step 6: Final answer
    x = 285.68

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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.