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Finding the Fourth Proportional to 297.70, 410.86 and 166.72

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Solution

The fourth proportional to 297.70, 410.86 and 166.72 is: 230.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.70 : 410.86 = 166.72 : x
  2. Step 2: Convert to fraction form
    297.70/410.86 = 166.72/x
  3. Step 3: Cross multiply
    297.70x = 410.86 × 166.72
  4. Step 4: Simplify right side
    297.70x = 68,498.58
  5. Step 5: Solve for x
    x = 68,498.58/297.70
  6. Step 6: Final answer
    x = 230.09

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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.