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Finding the Fourth Proportional to 300.41, 450.42 and 105.30

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Solution

The fourth proportional to 300.41, 450.42 and 105.30 is: 157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.41 : 450.42 = 105.30 : x
  2. Step 2: Convert to fraction form
    300.41/450.42 = 105.30/x
  3. Step 3: Cross multiply
    300.41x = 450.42 × 105.30
  4. Step 4: Simplify right side
    300.41x = 47,429.23
  5. Step 5: Solve for x
    x = 47,429.23/300.41
  6. Step 6: Final answer
    x = 157.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.