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Finding the Fourth Proportional to 199.74, 276.14 and 134.58

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Solution

The fourth proportional to 199.74, 276.14 and 134.58 is: 186.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.74 : 276.14 = 134.58 : x
  2. Step 2: Convert to fraction form
    199.74/276.14 = 134.58/x
  3. Step 3: Cross multiply
    199.74x = 276.14 × 134.58
  4. Step 4: Simplify right side
    199.74x = 37,162.92
  5. Step 5: Solve for x
    x = 37,162.92/199.74
  6. Step 6: Final answer
    x = 186.06

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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.