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Finding the Fourth Proportional to 63.88, 95.72 and 43.56

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Solution

The fourth proportional to 63.88, 95.72 and 43.56 is: 65.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.88 : 95.72 = 43.56 : x
  2. Step 2: Convert to fraction form
    63.88/95.72 = 43.56/x
  3. Step 3: Cross multiply
    63.88x = 95.72 × 43.56
  4. Step 4: Simplify right side
    63.88x = 4,169.35
  5. Step 5: Solve for x
    x = 4,169.35/63.88
  6. Step 6: Final answer
    x = 65.27

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Why These Related Problems?

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