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Finding the Fourth Proportional to 301.56, 415.96 and 208.26

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Solution

The fourth proportional to 301.56, 415.96 and 208.26 is: 287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.56 : 415.96 = 208.26 : x
  2. Step 2: Convert to fraction form
    301.56/415.96 = 208.26/x
  3. Step 3: Cross multiply
    301.56x = 415.96 × 208.26
  4. Step 4: Simplify right side
    301.56x = 86,627.83
  5. Step 5: Solve for x
    x = 86,627.83/301.56
  6. Step 6: Final answer
    x = 287.27

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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.