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Finding the Fourth Proportional to 382.55, 573.65 and 122.49

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Solution

The fourth proportional to 382.55, 573.65 and 122.49 is: 183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.55 : 573.65 = 122.49 : x
  2. Step 2: Convert to fraction form
    382.55/573.65 = 122.49/x
  3. Step 3: Cross multiply
    382.55x = 573.65 × 122.49
  4. Step 4: Simplify right side
    382.55x = 70,265.78
  5. Step 5: Solve for x
    x = 70,265.78/382.55
  6. Step 6: Final answer
    x = 183.68

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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.