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Finding the Fourth Proportional to 558.14, 837.22 and 211.63

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Solution

The fourth proportional to 558.14, 837.22 and 211.63 is: 317.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.14 : 837.22 = 211.63 : x
  2. Step 2: Convert to fraction form
    558.14/837.22 = 211.63/x
  3. Step 3: Cross multiply
    558.14x = 837.22 × 211.63
  4. Step 4: Simplify right side
    558.14x = 177,182.85
  5. Step 5: Solve for x
    x = 177,182.85/558.14
  6. Step 6: Final answer
    x = 317.45

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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.