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Finding the Fourth Proportional to 383.84, 575.82 and 127.28

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Solution

The fourth proportional to 383.84, 575.82 and 127.28 is: 190.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.84 : 575.82 = 127.28 : x
  2. Step 2: Convert to fraction form
    383.84/575.82 = 127.28/x
  3. Step 3: Cross multiply
    383.84x = 575.82 × 127.28
  4. Step 4: Simplify right side
    383.84x = 73,290.37
  5. Step 5: Solve for x
    x = 73,290.37/383.84
  6. Step 6: Final answer
    x = 190.94

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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.