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Finding the Fourth Proportional to 409.02, 613.33 and 148.97

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Solution

The fourth proportional to 409.02, 613.33 and 148.97 is: 223.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.02 : 613.33 = 148.97 : x
  2. Step 2: Convert to fraction form
    409.02/613.33 = 148.97/x
  3. Step 3: Cross multiply
    409.02x = 613.33 × 148.97
  4. Step 4: Simplify right side
    409.02x = 91,363.96
  5. Step 5: Solve for x
    x = 91,363.96/409.02
  6. Step 6: Final answer
    x = 223.38

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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.