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Finding the Fourth Proportional to 300.68, 414.88 and 169.68

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Solution

The fourth proportional to 300.68, 414.88 and 169.68 is: 234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.68 : 414.88 = 169.68 : x
  2. Step 2: Convert to fraction form
    300.68/414.88 = 169.68/x
  3. Step 3: Cross multiply
    300.68x = 414.88 × 169.68
  4. Step 4: Simplify right side
    300.68x = 70,396.84
  5. Step 5: Solve for x
    x = 70,396.84/300.68
  6. Step 6: Final answer
    x = 234.13

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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.