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Finding the Fourth Proportional to 409.37, 614.04 and 203.87

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Solution

The fourth proportional to 409.37, 614.04 and 203.87 is: 305.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.37 : 614.04 = 203.87 : x
  2. Step 2: Convert to fraction form
    409.37/614.04 = 203.87/x
  3. Step 3: Cross multiply
    409.37x = 614.04 × 203.87
  4. Step 4: Simplify right side
    409.37x = 125,185.87
  5. Step 5: Solve for x
    x = 125,185.87/409.37
  6. Step 6: Final answer
    x = 305.81

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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.