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Finding the Fourth Proportional to 300.02, 450.20 and 107.66

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Solution

The fourth proportional to 300.02, 450.20 and 107.66 is: 161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.02 : 450.20 = 107.66 : x
  2. Step 2: Convert to fraction form
    300.02/450.20 = 107.66/x
  3. Step 3: Cross multiply
    300.02x = 450.20 × 107.66
  4. Step 4: Simplify right side
    300.02x = 48,466.55
  5. Step 5: Solve for x
    x = 48,466.55/300.02
  6. Step 6: Final answer
    x = 161.55

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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.