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Finding the Fourth Proportional to 298.19, 411.12 and 193.09

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Solution

The fourth proportional to 298.19, 411.12 and 193.09 is: 266.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.19 : 411.12 = 193.09 : x
  2. Step 2: Convert to fraction form
    298.19/411.12 = 193.09/x
  3. Step 3: Cross multiply
    298.19x = 411.12 × 193.09
  4. Step 4: Simplify right side
    298.19x = 79,382.20
  5. Step 5: Solve for x
    x = 79,382.20/298.19
  6. Step 6: Final answer
    x = 266.22

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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.