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Finding the Fourth Proportional to 65.28, 97.94 and 34.85

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Solution

The fourth proportional to 65.28, 97.94 and 34.85 is: 52.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.28 : 97.94 = 34.85 : x
  2. Step 2: Convert to fraction form
    65.28/97.94 = 34.85/x
  3. Step 3: Cross multiply
    65.28x = 97.94 × 34.85
  4. Step 4: Simplify right side
    65.28x = 3,412.55
  5. Step 5: Solve for x
    x = 3,412.55/65.28
  6. Step 6: Final answer
    x = 52.28

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