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Finding the Fourth Proportional to 95.37, 143.22 and 80.35

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Solution

The fourth proportional to 95.37, 143.22 and 80.35 is: 120.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.37 : 143.22 = 80.35 : x
  2. Step 2: Convert to fraction form
    95.37/143.22 = 80.35/x
  3. Step 3: Cross multiply
    95.37x = 143.22 × 80.35
  4. Step 4: Simplify right side
    95.37x = 11,507.73
  5. Step 5: Solve for x
    x = 11,507.73/95.37
  6. Step 6: Final answer
    x = 120.66

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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.