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Finding the Fourth Proportional to 63.05, 86.92 and 53.33

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Solution

The fourth proportional to 63.05, 86.92 and 53.33 is: 73.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.05 : 86.92 = 53.33 : x
  2. Step 2: Convert to fraction form
    63.05/86.92 = 53.33/x
  3. Step 3: Cross multiply
    63.05x = 86.92 × 53.33
  4. Step 4: Simplify right side
    63.05x = 4,635.44
  5. Step 5: Solve for x
    x = 4,635.44/63.05
  6. Step 6: Final answer
    x = 73.52

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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.