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Finding the Fourth Proportional to 200.15, 276.12 and 126.32

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Solution

The fourth proportional to 200.15, 276.12 and 126.32 is: 174.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.15 : 276.12 = 126.32 : x
  2. Step 2: Convert to fraction form
    200.15/276.12 = 126.32/x
  3. Step 3: Cross multiply
    200.15x = 276.12 × 126.32
  4. Step 4: Simplify right side
    200.15x = 34,879.48
  5. Step 5: Solve for x
    x = 34,879.48/200.15
  6. Step 6: Final answer
    x = 174.27

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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.