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Finding the Fourth Proportional to 297.88, 411.07 and 166.90

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Solution

The fourth proportional to 297.88, 411.07 and 166.90 is: 230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.88 : 411.07 = 166.90 : x
  2. Step 2: Convert to fraction form
    297.88/411.07 = 166.90/x
  3. Step 3: Cross multiply
    297.88x = 411.07 × 166.90
  4. Step 4: Simplify right side
    297.88x = 68,607.58
  5. Step 5: Solve for x
    x = 68,607.58/297.88
  6. Step 6: Final answer
    x = 230.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.