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Finding the Fourth Proportional to 300.84, 414.81 and 245.40

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Solution

The fourth proportional to 300.84, 414.81 and 245.40 is: 338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.84 : 414.81 = 245.40 : x
  2. Step 2: Convert to fraction form
    300.84/414.81 = 245.40/x
  3. Step 3: Cross multiply
    300.84x = 414.81 × 245.40
  4. Step 4: Simplify right side
    300.84x = 101,794.37
  5. Step 5: Solve for x
    x = 101,794.37/300.84
  6. Step 6: Final answer
    x = 338.37

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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.