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Finding the Fourth Proportional to 298.71, 447.82 and 247.23

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Solution

The fourth proportional to 298.71, 447.82 and 247.23 is: 370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.71 : 447.82 = 247.23 : x
  2. Step 2: Convert to fraction form
    298.71/447.82 = 247.23/x
  3. Step 3: Cross multiply
    298.71x = 447.82 × 247.23
  4. Step 4: Simplify right side
    298.71x = 110,713.92
  5. Step 5: Solve for x
    x = 110,713.92/298.71
  6. Step 6: Final answer
    x = 370.64

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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.