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Finding the Fourth Proportional to 399.81, 600.41 and 360.18

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Solution

The fourth proportional to 399.81, 600.41 and 360.18 is: 540.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.81 : 600.41 = 360.18 : x
  2. Step 2: Convert to fraction form
    399.81/600.41 = 360.18/x
  3. Step 3: Cross multiply
    399.81x = 600.41 × 360.18
  4. Step 4: Simplify right side
    399.81x = 216,253.87
  5. Step 5: Solve for x
    x = 216,253.87/399.81
  6. Step 6: Final answer
    x = 540.89

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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.