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Finding the Fourth Proportional to 190.68, 285.96 and 94.46

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Solution

The fourth proportional to 190.68, 285.96 and 94.46 is: 141.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.68 : 285.96 = 94.46 : x
  2. Step 2: Convert to fraction form
    190.68/285.96 = 94.46/x
  3. Step 3: Cross multiply
    190.68x = 285.96 × 94.46
  4. Step 4: Simplify right side
    190.68x = 27,011.78
  5. Step 5: Solve for x
    x = 27,011.78/190.68
  6. Step 6: Final answer
    x = 141.66

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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.