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Finding the Fourth Proportional to 63.44, 87.55 and 35.81

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Solution

The fourth proportional to 63.44, 87.55 and 35.81 is: 49.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.44 : 87.55 = 35.81 : x
  2. Step 2: Convert to fraction form
    63.44/87.55 = 35.81/x
  3. Step 3: Cross multiply
    63.44x = 87.55 × 35.81
  4. Step 4: Simplify right side
    63.44x = 3,134.55
  5. Step 5: Solve for x
    x = 3,134.55/63.44
  6. Step 6: Final answer
    x = 49.41

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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.