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Finding the Fourth Proportional to 33.94, 46.89 and 30.31

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Solution

The fourth proportional to 33.94, 46.89 and 30.31 is: 41.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.94 : 46.89 = 30.31 : x
  2. Step 2: Convert to fraction form
    33.94/46.89 = 30.31/x
  3. Step 3: Cross multiply
    33.94x = 46.89 × 30.31
  4. Step 4: Simplify right side
    33.94x = 1,421.24
  5. Step 5: Solve for x
    x = 1,421.24/33.94
  6. Step 6: Final answer
    x = 41.87

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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.