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Finding the Fourth Proportional to 684.86, 1,027.38 and 222.49

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Solution

The fourth proportional to 684.86, 1,027.38 and 222.49 is: 333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.86 : 1,027.38 = 222.49 : x
  2. Step 2: Convert to fraction form
    684.86/1,027.38 = 222.49/x
  3. Step 3: Cross multiply
    684.86x = 1,027.38 × 222.49
  4. Step 4: Simplify right side
    684.86x = 228,576.64
  5. Step 5: Solve for x
    x = 228,576.64/684.86
  6. Step 6: Final answer
    x = 333.76

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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.