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Finding the Fourth Proportional to 96.83, 133.61 and 54.82

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Solution

The fourth proportional to 96.83, 133.61 and 54.82 is: 75.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.83 : 133.61 = 54.82 : x
  2. Step 2: Convert to fraction form
    96.83/133.61 = 54.82/x
  3. Step 3: Cross multiply
    96.83x = 133.61 × 54.82
  4. Step 4: Simplify right side
    96.83x = 7,323.56
  5. Step 5: Solve for x
    x = 7,323.56/96.83
  6. Step 6: Final answer
    x = 75.64

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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.