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Finding the Fourth Proportional to 575.50, 863.39 and 190.75

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Solution

The fourth proportional to 575.50, 863.39 and 190.75 is: 286.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.50 : 863.39 = 190.75 : x
  2. Step 2: Convert to fraction form
    575.50/863.39 = 190.75/x
  3. Step 3: Cross multiply
    575.50x = 863.39 × 190.75
  4. Step 4: Simplify right side
    575.50x = 164,691.64
  5. Step 5: Solve for x
    x = 164,691.64/575.50
  6. Step 6: Final answer
    x = 286.17

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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.