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Finding the Fourth Proportional to 190.13, 284.74 and 108.73

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Solution

The fourth proportional to 190.13, 284.74 and 108.73 is: 162.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.13 : 284.74 = 108.73 : x
  2. Step 2: Convert to fraction form
    190.13/284.74 = 108.73/x
  3. Step 3: Cross multiply
    190.13x = 284.74 × 108.73
  4. Step 4: Simplify right side
    190.13x = 30,957.81
  5. Step 5: Solve for x
    x = 30,957.81/190.13
  6. Step 6: Final answer
    x = 162.82

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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.