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Finding the Fourth Proportional to 200.26, 276.29 and 130.40

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Solution

The fourth proportional to 200.26, 276.29 and 130.40 is: 179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.26 : 276.29 = 130.40 : x
  2. Step 2: Convert to fraction form
    200.26/276.29 = 130.40/x
  3. Step 3: Cross multiply
    200.26x = 276.29 × 130.40
  4. Step 4: Simplify right side
    200.26x = 36,027.56
  5. Step 5: Solve for x
    x = 36,027.56/200.26
  6. Step 6: Final answer
    x = 179.91

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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.