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Finding the Fourth Proportional to 243.88, 366.12 and 191.98

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Solution

The fourth proportional to 243.88, 366.12 and 191.98 is: 288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.88 : 366.12 = 191.98 : x
  2. Step 2: Convert to fraction form
    243.88/366.12 = 191.98/x
  3. Step 3: Cross multiply
    243.88x = 366.12 × 191.98
  4. Step 4: Simplify right side
    243.88x = 70,287.72
  5. Step 5: Solve for x
    x = 70,287.72/243.88
  6. Step 6: Final answer
    x = 288.21

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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.