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Finding the Fourth Proportional to 63.37, 86.88 and 63.29

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Solution

The fourth proportional to 63.37, 86.88 and 63.29 is: 86.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.37 : 86.88 = 63.29 : x
  2. Step 2: Convert to fraction form
    63.37/86.88 = 63.29/x
  3. Step 3: Cross multiply
    63.37x = 86.88 × 63.29
  4. Step 4: Simplify right side
    63.37x = 5,498.32
  5. Step 5: Solve for x
    x = 5,498.32/63.37
  6. Step 6: Final answer
    x = 86.77

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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.