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Finding the Fourth Proportional to 68.60, 94.63 and 50.17

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Solution

The fourth proportional to 68.60, 94.63 and 50.17 is: 69.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.60 : 94.63 = 50.17 : x
  2. Step 2: Convert to fraction form
    68.60/94.63 = 50.17/x
  3. Step 3: Cross multiply
    68.60x = 94.63 × 50.17
  4. Step 4: Simplify right side
    68.60x = 4,747.23
  5. Step 5: Solve for x
    x = 4,747.23/68.60
  6. Step 6: Final answer
    x = 69.21

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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.