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Finding the Fourth Proportional to 298.02, 447.23 and 115.43

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Solution

The fourth proportional to 298.02, 447.23 and 115.43 is: 173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.02 : 447.23 = 115.43 : x
  2. Step 2: Convert to fraction form
    298.02/447.23 = 115.43/x
  3. Step 3: Cross multiply
    298.02x = 447.23 × 115.43
  4. Step 4: Simplify right side
    298.02x = 51,623.76
  5. Step 5: Solve for x
    x = 51,623.76/298.02
  6. Step 6: Final answer
    x = 173.22

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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.