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Finding the Fourth Proportional to 357.82, 536.86 and 126.73

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Solution

The fourth proportional to 357.82, 536.86 and 126.73 is: 190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.82 : 536.86 = 126.73 : x
  2. Step 2: Convert to fraction form
    357.82/536.86 = 126.73/x
  3. Step 3: Cross multiply
    357.82x = 536.86 × 126.73
  4. Step 4: Simplify right side
    357.82x = 68,037.10
  5. Step 5: Solve for x
    x = 68,037.10/357.82
  6. Step 6: Final answer
    x = 190.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.