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Finding the Fourth Proportional to 33.45, 45.68 and 33.09

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Solution

The fourth proportional to 33.45, 45.68 and 33.09 is: 45.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.45 : 45.68 = 33.09 : x
  2. Step 2: Convert to fraction form
    33.45/45.68 = 33.09/x
  3. Step 3: Cross multiply
    33.45x = 45.68 × 33.09
  4. Step 4: Simplify right side
    33.45x = 1,511.63
  5. Step 5: Solve for x
    x = 1,511.63/33.45
  6. Step 6: Final answer
    x = 45.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.