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Finding the Fourth Proportional to 200.20, 276.06 and 170.74

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Solution

The fourth proportional to 200.20, 276.06 and 170.74 is: 235.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.20 : 276.06 = 170.74 : x
  2. Step 2: Convert to fraction form
    200.20/276.06 = 170.74/x
  3. Step 3: Cross multiply
    200.20x = 276.06 × 170.74
  4. Step 4: Simplify right side
    200.20x = 47,134.48
  5. Step 5: Solve for x
    x = 47,134.48/200.20
  6. Step 6: Final answer
    x = 235.44

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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.