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Finding the Fourth Proportional to 63.87, 96.16 and 57.25

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Solution

The fourth proportional to 63.87, 96.16 and 57.25 is: 86.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.87 : 96.16 = 57.25 : x
  2. Step 2: Convert to fraction form
    63.87/96.16 = 57.25/x
  3. Step 3: Cross multiply
    63.87x = 96.16 × 57.25
  4. Step 4: Simplify right side
    63.87x = 5,505.16
  5. Step 5: Solve for x
    x = 5,505.16/63.87
  6. Step 6: Final answer
    x = 86.19

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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.