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Finding the Fourth Proportional to 403.11, 603.81 and 240.39

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Solution

The fourth proportional to 403.11, 603.81 and 240.39 is: 360.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.11 : 603.81 = 240.39 : x
  2. Step 2: Convert to fraction form
    403.11/603.81 = 240.39/x
  3. Step 3: Cross multiply
    403.11x = 603.81 × 240.39
  4. Step 4: Simplify right side
    403.11x = 145,149.89
  5. Step 5: Solve for x
    x = 145,149.89/403.11
  6. Step 6: Final answer
    x = 360.08

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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.