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Finding the Fourth Proportional to 559.20, 771.27 and 338.01

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Solution

The fourth proportional to 559.20, 771.27 and 338.01 is: 466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.20 : 771.27 = 338.01 : x
  2. Step 2: Convert to fraction form
    559.20/771.27 = 338.01/x
  3. Step 3: Cross multiply
    559.20x = 771.27 × 338.01
  4. Step 4: Simplify right side
    559.20x = 260,696.97
  5. Step 5: Solve for x
    x = 260,696.97/559.20
  6. Step 6: Final answer
    x = 466.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.