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Finding the Fourth Proportional to 558.60, 837.69 and 211.88

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Solution

The fourth proportional to 558.60, 837.69 and 211.88 is: 317.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.60 : 837.69 = 211.88 : x
  2. Step 2: Convert to fraction form
    558.60/837.69 = 211.88/x
  3. Step 3: Cross multiply
    558.60x = 837.69 × 211.88
  4. Step 4: Simplify right side
    558.60x = 177,485.57
  5. Step 5: Solve for x
    x = 177,485.57/558.60
  6. Step 6: Final answer
    x = 317.73

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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.