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Finding the Fourth Proportional to 559.47, 771.93 and 349.32

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Solution

The fourth proportional to 559.47, 771.93 and 349.32 is: 481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.47 : 771.93 = 349.32 : x
  2. Step 2: Convert to fraction form
    559.47/771.93 = 349.32/x
  3. Step 3: Cross multiply
    559.47x = 771.93 × 349.32
  4. Step 4: Simplify right side
    559.47x = 269,650.59
  5. Step 5: Solve for x
    x = 269,650.59/559.47
  6. Step 6: Final answer
    x = 481.98

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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.