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Finding the Fourth Proportional to 363.90, 546.13 and 190.61

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Solution

The fourth proportional to 363.90, 546.13 and 190.61 is: 286.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.90 : 546.13 = 190.61 : x
  2. Step 2: Convert to fraction form
    363.90/546.13 = 190.61/x
  3. Step 3: Cross multiply
    363.90x = 546.13 × 190.61
  4. Step 4: Simplify right side
    363.90x = 104,097.84
  5. Step 5: Solve for x
    x = 104,097.84/363.90
  6. Step 6: Final answer
    x = 286.06

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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.