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Finding the Fourth Proportional to 541.14, 811.85 and 189.74

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Solution

The fourth proportional to 541.14, 811.85 and 189.74 is: 284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.14 : 811.85 = 189.74 : x
  2. Step 2: Convert to fraction form
    541.14/811.85 = 189.74/x
  3. Step 3: Cross multiply
    541.14x = 811.85 × 189.74
  4. Step 4: Simplify right side
    541.14x = 154,035.41
  5. Step 5: Solve for x
    x = 154,035.41/541.14
  6. Step 6: Final answer
    x = 284.65

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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.