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Finding the Fourth Proportional to 53.96, 81.04 and 35.92

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Solution

The fourth proportional to 53.96, 81.04 and 35.92 is: 53.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.96 : 81.04 = 35.92 : x
  2. Step 2: Convert to fraction form
    53.96/81.04 = 35.92/x
  3. Step 3: Cross multiply
    53.96x = 81.04 × 35.92
  4. Step 4: Simplify right side
    53.96x = 2,910.96
  5. Step 5: Solve for x
    x = 2,910.96/53.96
  6. Step 6: Final answer
    x = 53.95

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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.