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Finding the Fourth Proportional to 63.96, 88.27 and 61.23

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Solution

The fourth proportional to 63.96, 88.27 and 61.23 is: 84.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.96 : 88.27 = 61.23 : x
  2. Step 2: Convert to fraction form
    63.96/88.27 = 61.23/x
  3. Step 3: Cross multiply
    63.96x = 88.27 × 61.23
  4. Step 4: Simplify right side
    63.96x = 5,404.33
  5. Step 5: Solve for x
    x = 5,404.33/63.96
  6. Step 6: Final answer
    x = 84.50

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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.