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Finding the Fourth Proportional to 96.36, 132.95 and 54.90

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Solution

The fourth proportional to 96.36, 132.95 and 54.90 is: 75.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.36 : 132.95 = 54.90 : x
  2. Step 2: Convert to fraction form
    96.36/132.95 = 54.90/x
  3. Step 3: Cross multiply
    96.36x = 132.95 × 54.90
  4. Step 4: Simplify right side
    96.36x = 7,299.31
  5. Step 5: Solve for x
    x = 7,299.31/96.36
  6. Step 6: Final answer
    x = 75.75

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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.