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Finding the Fourth Proportional to 243.90, 366.05 and 141.33

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Solution

The fourth proportional to 243.90, 366.05 and 141.33 is: 212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.90 : 366.05 = 141.33 : x
  2. Step 2: Convert to fraction form
    243.90/366.05 = 141.33/x
  3. Step 3: Cross multiply
    243.90x = 366.05 × 141.33
  4. Step 4: Simplify right side
    243.90x = 51,733.14
  5. Step 5: Solve for x
    x = 51,733.14/243.90
  6. Step 6: Final answer
    x = 212.11

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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.