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Finding the Fourth Proportional to 190.13, 285.19 and 93.94

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Solution

The fourth proportional to 190.13, 285.19 and 93.94 is: 140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.13 : 285.19 = 93.94 : x
  2. Step 2: Convert to fraction form
    190.13/285.19 = 93.94/x
  3. Step 3: Cross multiply
    190.13x = 285.19 × 93.94
  4. Step 4: Simplify right side
    190.13x = 26,789.80
  5. Step 5: Solve for x
    x = 26,789.80/190.13
  6. Step 6: Final answer
    x = 140.91

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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.