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Finding the Fourth Proportional to 383.25, 574.92 and 126.75

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Solution

The fourth proportional to 383.25, 574.92 and 126.75 is: 190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.25 : 574.92 = 126.75 : x
  2. Step 2: Convert to fraction form
    383.25/574.92 = 126.75/x
  3. Step 3: Cross multiply
    383.25x = 574.92 × 126.75
  4. Step 4: Simplify right side
    383.25x = 72,871.11
  5. Step 5: Solve for x
    x = 72,871.11/383.25
  6. Step 6: Final answer
    x = 190.14

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