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Finding the Fourth Proportional to 243.41, 333.79 and 218.77

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Solution

The fourth proportional to 243.41, 333.79 and 218.77 is: 300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.41 : 333.79 = 218.77 : x
  2. Step 2: Convert to fraction form
    243.41/333.79 = 218.77/x
  3. Step 3: Cross multiply
    243.41x = 333.79 × 218.77
  4. Step 4: Simplify right side
    243.41x = 73,021.86
  5. Step 5: Solve for x
    x = 73,021.86/243.41
  6. Step 6: Final answer
    x = 300.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.