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Finding the Fourth Proportional to 200.51, 276.60 and 130.57

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Solution

The fourth proportional to 200.51, 276.60 and 130.57 is: 180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.51 : 276.60 = 130.57 : x
  2. Step 2: Convert to fraction form
    200.51/276.60 = 130.57/x
  3. Step 3: Cross multiply
    200.51x = 276.60 × 130.57
  4. Step 4: Simplify right side
    200.51x = 36,115.66
  5. Step 5: Solve for x
    x = 36,115.66/200.51
  6. Step 6: Final answer
    x = 180.12

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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.