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Finding the Fourth Proportional to 190.54, 285.13 and 167.86

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Solution

The fourth proportional to 190.54, 285.13 and 167.86 is: 251.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.54 : 285.13 = 167.86 : x
  2. Step 2: Convert to fraction form
    190.54/285.13 = 167.86/x
  3. Step 3: Cross multiply
    190.54x = 285.13 × 167.86
  4. Step 4: Simplify right side
    190.54x = 47,861.92
  5. Step 5: Solve for x
    x = 47,861.92/190.54
  6. Step 6: Final answer
    x = 251.19

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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.