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Finding the Fourth Proportional to 120.30, 180.43 and 33.62

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Solution

The fourth proportional to 120.30, 180.43 and 33.62 is: 50.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.30 : 180.43 = 33.62 : x
  2. Step 2: Convert to fraction form
    120.30/180.43 = 33.62/x
  3. Step 3: Cross multiply
    120.30x = 180.43 × 33.62
  4. Step 4: Simplify right side
    120.30x = 6,065.36
  5. Step 5: Solve for x
    x = 6,065.36/120.30
  6. Step 6: Final answer
    x = 50.42

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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.