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Finding the Fourth Proportional to 364.41, 546.42 and 120.85

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Solution

The fourth proportional to 364.41, 546.42 and 120.85 is: 181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.41 : 546.42 = 120.85 : x
  2. Step 2: Convert to fraction form
    364.41/546.42 = 120.85/x
  3. Step 3: Cross multiply
    364.41x = 546.42 × 120.85
  4. Step 4: Simplify right side
    364.41x = 66,033.49
  5. Step 5: Solve for x
    x = 66,033.49/364.41
  6. Step 6: Final answer
    x = 181.21

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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.