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Finding the Fourth Proportional to 409.23, 613.44 and 192.84

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Solution

The fourth proportional to 409.23, 613.44 and 192.84 is: 289.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.23 : 613.44 = 192.84 : x
  2. Step 2: Convert to fraction form
    409.23/613.44 = 192.84/x
  3. Step 3: Cross multiply
    409.23x = 613.44 × 192.84
  4. Step 4: Simplify right side
    409.23x = 118,295.77
  5. Step 5: Solve for x
    x = 118,295.77/409.23
  6. Step 6: Final answer
    x = 289.07

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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.