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Finding the Fourth Proportional to 399.44, 601.68 and 369.36

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Solution

The fourth proportional to 399.44, 601.68 and 369.36 is: 556.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.44 : 601.68 = 369.36 : x
  2. Step 2: Convert to fraction form
    399.44/601.68 = 369.36/x
  3. Step 3: Cross multiply
    399.44x = 601.68 × 369.36
  4. Step 4: Simplify right side
    399.44x = 222,236.52
  5. Step 5: Solve for x
    x = 222,236.52/399.44
  6. Step 6: Final answer
    x = 556.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.