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Finding the Fourth Proportional to 68.53, 102.71 and 29.95

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Solution

The fourth proportional to 68.53, 102.71 and 29.95 is: 44.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.53 : 102.71 = 29.95 : x
  2. Step 2: Convert to fraction form
    68.53/102.71 = 29.95/x
  3. Step 3: Cross multiply
    68.53x = 102.71 × 29.95
  4. Step 4: Simplify right side
    68.53x = 3,076.16
  5. Step 5: Solve for x
    x = 3,076.16/68.53
  6. Step 6: Final answer
    x = 44.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.