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Finding the Fourth Proportional to 190.23, 285.78 and 179.87

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Solution

The fourth proportional to 190.23, 285.78 and 179.87 is: 270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.23 : 285.78 = 179.87 : x
  2. Step 2: Convert to fraction form
    190.23/285.78 = 179.87/x
  3. Step 3: Cross multiply
    190.23x = 285.78 × 179.87
  4. Step 4: Simplify right side
    190.23x = 51,401.82
  5. Step 5: Solve for x
    x = 51,401.82/190.23
  6. Step 6: Final answer
    x = 270.21

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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.