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Finding the Fourth Proportional to 558.32, 842.48 and 535.85

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Solution

The fourth proportional to 558.32, 842.48 and 535.85 is: 808.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.32 : 842.48 = 535.85 : x
  2. Step 2: Convert to fraction form
    558.32/842.48 = 535.85/x
  3. Step 3: Cross multiply
    558.32x = 842.48 × 535.85
  4. Step 4: Simplify right side
    558.32x = 451,438.70
  5. Step 5: Solve for x
    x = 451,438.70/558.32
  6. Step 6: Final answer
    x = 808.57

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.