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Finding the Fourth Proportional to 199.83, 276.12 and 160.44

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Solution

The fourth proportional to 199.83, 276.12 and 160.44 is: 221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.83 : 276.12 = 160.44 : x
  2. Step 2: Convert to fraction form
    199.83/276.12 = 160.44/x
  3. Step 3: Cross multiply
    199.83x = 276.12 × 160.44
  4. Step 4: Simplify right side
    199.83x = 44,300.69
  5. Step 5: Solve for x
    x = 44,300.69/199.83
  6. Step 6: Final answer
    x = 221.69

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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.