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Finding the Fourth Proportional to 63.66, 87.93 and 63.27

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Solution

The fourth proportional to 63.66, 87.93 and 63.27 is: 87.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.66 : 87.93 = 63.27 : x
  2. Step 2: Convert to fraction form
    63.66/87.93 = 63.27/x
  3. Step 3: Cross multiply
    63.66x = 87.93 × 63.27
  4. Step 4: Simplify right side
    63.66x = 5,563.33
  5. Step 5: Solve for x
    x = 5,563.33/63.66
  6. Step 6: Final answer
    x = 87.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.