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Finding the Fourth Proportional to 684.94, 1,027.47 and 222.55

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Solution

The fourth proportional to 684.94, 1,027.47 and 222.55 is: 333.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.94 : 1,027.47 = 222.55 : x
  2. Step 2: Convert to fraction form
    684.94/1,027.47 = 222.55/x
  3. Step 3: Cross multiply
    684.94x = 1,027.47 × 222.55
  4. Step 4: Simplify right side
    684.94x = 228,663.45
  5. Step 5: Solve for x
    x = 228,663.45/684.94
  6. Step 6: Final answer
    x = 333.84

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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.