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Finding the Fourth Proportional to 300.68, 414.89 and 190.08

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Solution

The fourth proportional to 300.68, 414.89 and 190.08 is: 262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.68 : 414.89 = 190.08 : x
  2. Step 2: Convert to fraction form
    300.68/414.89 = 190.08/x
  3. Step 3: Cross multiply
    300.68x = 414.89 × 190.08
  4. Step 4: Simplify right side
    300.68x = 78,862.05
  5. Step 5: Solve for x
    x = 78,862.05/300.68
  6. Step 6: Final answer
    x = 262.28

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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.