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Finding the Fourth Proportional to 33.16, 49.41 and 31.13

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Solution

The fourth proportional to 33.16, 49.41 and 31.13 is: 46.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.16 : 49.41 = 31.13 : x
  2. Step 2: Convert to fraction form
    33.16/49.41 = 31.13/x
  3. Step 3: Cross multiply
    33.16x = 49.41 × 31.13
  4. Step 4: Simplify right side
    33.16x = 1,538.13
  5. Step 5: Solve for x
    x = 1,538.13/33.16
  6. Step 6: Final answer
    x = 46.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.