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Finding the Fourth Proportional to 437.06, 655.89 and 205.96

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Solution

The fourth proportional to 437.06, 655.89 and 205.96 is: 309.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.06 : 655.89 = 205.96 : x
  2. Step 2: Convert to fraction form
    437.06/655.89 = 205.96/x
  3. Step 3: Cross multiply
    437.06x = 655.89 × 205.96
  4. Step 4: Simplify right side
    437.06x = 135,083.82
  5. Step 5: Solve for x
    x = 135,083.82/437.06
  6. Step 6: Final answer
    x = 309.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.