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Finding the Fourth Proportional to 300.73, 414.92 and 188.79

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Solution

The fourth proportional to 300.73, 414.92 and 188.79 is: 260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.73 : 414.92 = 188.79 : x
  2. Step 2: Convert to fraction form
    300.73/414.92 = 188.79/x
  3. Step 3: Cross multiply
    300.73x = 414.92 × 188.79
  4. Step 4: Simplify right side
    300.73x = 78,332.75
  5. Step 5: Solve for x
    x = 78,332.75/300.73
  6. Step 6: Final answer
    x = 260.48

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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.