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Finding the Fourth Proportional to 541.05, 811.63 and 396.60

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Solution

The fourth proportional to 541.05, 811.63 and 396.60 is: 594.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.05 : 811.63 = 396.60 : x
  2. Step 2: Convert to fraction form
    541.05/811.63 = 396.60/x
  3. Step 3: Cross multiply
    541.05x = 811.63 × 396.60
  4. Step 4: Simplify right side
    541.05x = 321,890.72
  5. Step 5: Solve for x
    x = 321,890.72/541.05
  6. Step 6: Final answer
    x = 594.94

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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.