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Finding the Fourth Proportional to 63.57, 86.51 and 63.27

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Solution

The fourth proportional to 63.57, 86.51 and 63.27 is: 86.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.57 : 86.51 = 63.27 : x
  2. Step 2: Convert to fraction form
    63.57/86.51 = 63.27/x
  3. Step 3: Cross multiply
    63.57x = 86.51 × 63.27
  4. Step 4: Simplify right side
    63.57x = 5,473.49
  5. Step 5: Solve for x
    x = 5,473.49/63.57
  6. Step 6: Final answer
    x = 86.10

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.