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Finding the Fourth Proportional to 298.01, 411.25 and 173.74

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Solution

The fourth proportional to 298.01, 411.25 and 173.74 is: 239.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.01 : 411.25 = 173.74 : x
  2. Step 2: Convert to fraction form
    298.01/411.25 = 173.74/x
  3. Step 3: Cross multiply
    298.01x = 411.25 × 173.74
  4. Step 4: Simplify right side
    298.01x = 71,450.58
  5. Step 5: Solve for x
    x = 71,450.58/298.01
  6. Step 6: Final answer
    x = 239.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.