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Finding the Fourth Proportional to 95.77, 132.14 and 54.31

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Solution

The fourth proportional to 95.77, 132.14 and 54.31 is: 74.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.77 : 132.14 = 54.31 : x
  2. Step 2: Convert to fraction form
    95.77/132.14 = 54.31/x
  3. Step 3: Cross multiply
    95.77x = 132.14 × 54.31
  4. Step 4: Simplify right side
    95.77x = 7,176.25
  5. Step 5: Solve for x
    x = 7,176.25/95.77
  6. Step 6: Final answer
    x = 74.94

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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.