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Finding the Fourth Proportional to 242.18, 364.07 and 191.43

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Solution

The fourth proportional to 242.18, 364.07 and 191.43 is: 287.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.18 : 364.07 = 191.43 : x
  2. Step 2: Convert to fraction form
    242.18/364.07 = 191.43/x
  3. Step 3: Cross multiply
    242.18x = 364.07 × 191.43
  4. Step 4: Simplify right side
    242.18x = 69,692.96
  5. Step 5: Solve for x
    x = 69,692.96/242.18
  6. Step 6: Final answer
    x = 287.78

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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.