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Finding the Fourth Proportional to 403.28, 601.96 and 369.08

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Solution

The fourth proportional to 403.28, 601.96 and 369.08 is: 550.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.28 : 601.96 = 369.08 : x
  2. Step 2: Convert to fraction form
    403.28/601.96 = 369.08/x
  3. Step 3: Cross multiply
    403.28x = 601.96 × 369.08
  4. Step 4: Simplify right side
    403.28x = 222,171.40
  5. Step 5: Solve for x
    x = 222,171.40/403.28
  6. Step 6: Final answer
    x = 550.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.