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Finding the Fourth Proportional to 63.24, 86.62 and 59.55

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Solution

The fourth proportional to 63.24, 86.62 and 59.55 is: 81.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.24 : 86.62 = 59.55 : x
  2. Step 2: Convert to fraction form
    63.24/86.62 = 59.55/x
  3. Step 3: Cross multiply
    63.24x = 86.62 × 59.55
  4. Step 4: Simplify right side
    63.24x = 5,158.07
  5. Step 5: Solve for x
    x = 5,158.07/63.24
  6. Step 6: Final answer
    x = 81.56

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.