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Finding the Fourth Proportional to 95.14, 141.74 and 90.55

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Solution

The fourth proportional to 95.14, 141.74 and 90.55 is: 134.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.14 : 141.74 = 90.55 : x
  2. Step 2: Convert to fraction form
    95.14/141.74 = 90.55/x
  3. Step 3: Cross multiply
    95.14x = 141.74 × 90.55
  4. Step 4: Simplify right side
    95.14x = 12,834.56
  5. Step 5: Solve for x
    x = 12,834.56/95.14
  6. Step 6: Final answer
    x = 134.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.