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Finding the Fourth Proportional to 371.89, 558.17 and 235.18

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Solution

The fourth proportional to 371.89, 558.17 and 235.18 is: 352.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.89 : 558.17 = 235.18 : x
  2. Step 2: Convert to fraction form
    371.89/558.17 = 235.18/x
  3. Step 3: Cross multiply
    371.89x = 558.17 × 235.18
  4. Step 4: Simplify right side
    371.89x = 131,270.42
  5. Step 5: Solve for x
    x = 131,270.42/371.89
  6. Step 6: Final answer
    x = 352.98

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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.