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Finding the Fourth Proportional to 558.88, 838.40 and 229.92

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Solution

The fourth proportional to 558.88, 838.40 and 229.92 is: 344.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.88 : 838.40 = 229.92 : x
  2. Step 2: Convert to fraction form
    558.88/838.40 = 229.92/x
  3. Step 3: Cross multiply
    558.88x = 838.40 × 229.92
  4. Step 4: Simplify right side
    558.88x = 192,764.93
  5. Step 5: Solve for x
    x = 192,764.93/558.88
  6. Step 6: Final answer
    x = 344.91

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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.