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Finding the Fourth Proportional to 372.31, 558.60 and 166.90

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Solution

The fourth proportional to 372.31, 558.60 and 166.90 is: 250.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.31 : 558.60 = 166.90 : x
  2. Step 2: Convert to fraction form
    372.31/558.60 = 166.90/x
  3. Step 3: Cross multiply
    372.31x = 558.60 × 166.90
  4. Step 4: Simplify right side
    372.31x = 93,230.34
  5. Step 5: Solve for x
    x = 93,230.34/372.31
  6. Step 6: Final answer
    x = 250.41

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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.