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Finding the Fourth Proportional to 49.35, 68.11 and 29.94

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Solution

The fourth proportional to 49.35, 68.11 and 29.94 is: 41.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.35 : 68.11 = 29.94 : x
  2. Step 2: Convert to fraction form
    49.35/68.11 = 29.94/x
  3. Step 3: Cross multiply
    49.35x = 68.11 × 29.94
  4. Step 4: Simplify right side
    49.35x = 2,039.06
  5. Step 5: Solve for x
    x = 2,039.06/49.35
  6. Step 6: Final answer
    x = 41.32

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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.