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Finding the Fourth Proportional to 300.39, 414.55 and 195.53

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Solution

The fourth proportional to 300.39, 414.55 and 195.53 is: 269.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.39 : 414.55 = 195.53 : x
  2. Step 2: Convert to fraction form
    300.39/414.55 = 195.53/x
  3. Step 3: Cross multiply
    300.39x = 414.55 × 195.53
  4. Step 4: Simplify right side
    300.39x = 81,055.98
  5. Step 5: Solve for x
    x = 81,055.98/300.39
  6. Step 6: Final answer
    x = 269.84

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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.