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Finding the Fourth Proportional to 95.63, 132.03 and 66.47

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Solution

The fourth proportional to 95.63, 132.03 and 66.47 is: 91.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.63 : 132.03 = 66.47 : x
  2. Step 2: Convert to fraction form
    95.63/132.03 = 66.47/x
  3. Step 3: Cross multiply
    95.63x = 132.03 × 66.47
  4. Step 4: Simplify right side
    95.63x = 8,775.37
  5. Step 5: Solve for x
    x = 8,775.37/95.63
  6. Step 6: Final answer
    x = 91.77

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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.