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Finding the Fourth Proportional to 68.84, 94.83 and 49.40

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Solution

The fourth proportional to 68.84, 94.83 and 49.40 is: 68.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.84 : 94.83 = 49.40 : x
  2. Step 2: Convert to fraction form
    68.84/94.83 = 49.40/x
  3. Step 3: Cross multiply
    68.84x = 94.83 × 49.40
  4. Step 4: Simplify right side
    68.84x = 4,684.60
  5. Step 5: Solve for x
    x = 4,684.60/68.84
  6. Step 6: Final answer
    x = 68.05

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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.