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Finding the Fourth Proportional to 68.53, 103.19 and 50.62

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Solution

The fourth proportional to 68.53, 103.19 and 50.62 is: 76.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.53 : 103.19 = 50.62 : x
  2. Step 2: Convert to fraction form
    68.53/103.19 = 50.62/x
  3. Step 3: Cross multiply
    68.53x = 103.19 × 50.62
  4. Step 4: Simplify right side
    68.53x = 5,223.48
  5. Step 5: Solve for x
    x = 5,223.48/68.53
  6. Step 6: Final answer
    x = 76.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.