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Finding the Fourth Proportional to 190.56, 284.43 and 171.12

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Solution

The fourth proportional to 190.56, 284.43 and 171.12 is: 255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.56 : 284.43 = 171.12 : x
  2. Step 2: Convert to fraction form
    190.56/284.43 = 171.12/x
  3. Step 3: Cross multiply
    190.56x = 284.43 × 171.12
  4. Step 4: Simplify right side
    190.56x = 48,671.66
  5. Step 5: Solve for x
    x = 48,671.66/190.56
  6. Step 6: Final answer
    x = 255.41

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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.