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Finding the Fourth Proportional to 200.91, 276.94 and 151.71

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Solution

The fourth proportional to 200.91, 276.94 and 151.71 is: 209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.91 : 276.94 = 151.71 : x
  2. Step 2: Convert to fraction form
    200.91/276.94 = 151.71/x
  3. Step 3: Cross multiply
    200.91x = 276.94 × 151.71
  4. Step 4: Simplify right side
    200.91x = 42,014.57
  5. Step 5: Solve for x
    x = 42,014.57/200.91
  6. Step 6: Final answer
    x = 209.12

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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.