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Finding the Fourth Proportional to 484.33, 667.59 and 405.37

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Solution

The fourth proportional to 484.33, 667.59 and 405.37 is: 558.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.33 : 667.59 = 405.37 : x
  2. Step 2: Convert to fraction form
    484.33/667.59 = 405.37/x
  3. Step 3: Cross multiply
    484.33x = 667.59 × 405.37
  4. Step 4: Simplify right side
    484.33x = 270,620.96
  5. Step 5: Solve for x
    x = 270,620.96/484.33
  6. Step 6: Final answer
    x = 558.75

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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.