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Finding the Fourth Proportional to 68.53, 102.77 and 52.46

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Solution

The fourth proportional to 68.53, 102.77 and 52.46 is: 78.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.53 : 102.77 = 52.46 : x
  2. Step 2: Convert to fraction form
    68.53/102.77 = 52.46/x
  3. Step 3: Cross multiply
    68.53x = 102.77 × 52.46
  4. Step 4: Simplify right side
    68.53x = 5,391.05
  5. Step 5: Solve for x
    x = 5,391.05/68.53
  6. Step 6: Final answer
    x = 78.67

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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.