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Finding the Fourth Proportional to 409.07, 613.03 and 203.44

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Solution

The fourth proportional to 409.07, 613.03 and 203.44 is: 304.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.07 : 613.03 = 203.44 : x
  2. Step 2: Convert to fraction form
    409.07/613.03 = 203.44/x
  3. Step 3: Cross multiply
    409.07x = 613.03 × 203.44
  4. Step 4: Simplify right side
    409.07x = 124,710.74
  5. Step 5: Solve for x
    x = 124,710.74/409.07
  6. Step 6: Final answer
    x = 304.86

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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.