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Finding the Fourth Proportional to 383.32, 575.02 and 126.84

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Solution

The fourth proportional to 383.32, 575.02 and 126.84 is: 190.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.32 : 575.02 = 126.84 : x
  2. Step 2: Convert to fraction form
    383.32/575.02 = 126.84/x
  3. Step 3: Cross multiply
    383.32x = 575.02 × 126.84
  4. Step 4: Simplify right side
    383.32x = 72,935.54
  5. Step 5: Solve for x
    x = 72,935.54/383.32
  6. Step 6: Final answer
    x = 190.27

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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.