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Finding the Fourth Proportional to 298.19, 411.45 and 173.84

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Solution

The fourth proportional to 298.19, 411.45 and 173.84 is: 239.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.19 : 411.45 = 173.84 : x
  2. Step 2: Convert to fraction form
    298.19/411.45 = 173.84/x
  3. Step 3: Cross multiply
    298.19x = 411.45 × 173.84
  4. Step 4: Simplify right side
    298.19x = 71,523.76
  5. Step 5: Solve for x
    x = 71,523.76/298.19
  6. Step 6: Final answer
    x = 239.86

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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.