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Finding the Fourth Proportional to 604.80, 835.52 and 558.72

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Solution

The fourth proportional to 604.80, 835.52 and 558.72 is: 771.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.80 : 835.52 = 558.72 : x
  2. Step 2: Convert to fraction form
    604.80/835.52 = 558.72/x
  3. Step 3: Cross multiply
    604.80x = 835.52 × 558.72
  4. Step 4: Simplify right side
    604.80x = 466,821.73
  5. Step 5: Solve for x
    x = 466,821.73/604.80
  6. Step 6: Final answer
    x = 771.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.