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Finding the Fourth Proportional to 372.22, 558.09 and 141.10

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Solution

The fourth proportional to 372.22, 558.09 and 141.10 is: 211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.22 : 558.09 = 141.10 : x
  2. Step 2: Convert to fraction form
    372.22/558.09 = 141.10/x
  3. Step 3: Cross multiply
    372.22x = 558.09 × 141.10
  4. Step 4: Simplify right side
    372.22x = 78,746.50
  5. Step 5: Solve for x
    x = 78,746.50/372.22
  6. Step 6: Final answer
    x = 211.56

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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.