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Finding the Fourth Proportional to 558.91, 771.75 and 349.33

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Solution

The fourth proportional to 558.91, 771.75 and 349.33 is: 482.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.91 : 771.75 = 349.33 : x
  2. Step 2: Convert to fraction form
    558.91/771.75 = 349.33/x
  3. Step 3: Cross multiply
    558.91x = 771.75 × 349.33
  4. Step 4: Simplify right side
    558.91x = 269,595.43
  5. Step 5: Solve for x
    x = 269,595.43/558.91
  6. Step 6: Final answer
    x = 482.36

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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.