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Finding the Fourth Proportional to 684.54, 1,026.92 and 222.17

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Solution

The fourth proportional to 684.54, 1,026.92 and 222.17 is: 333.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.54 : 1,026.92 = 222.17 : x
  2. Step 2: Convert to fraction form
    684.54/1,026.92 = 222.17/x
  3. Step 3: Cross multiply
    684.54x = 1,026.92 × 222.17
  4. Step 4: Simplify right side
    684.54x = 228,150.82
  5. Step 5: Solve for x
    x = 228,150.82/684.54
  6. Step 6: Final answer
    x = 333.29

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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.