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Finding the Fourth Proportional to 655.29, 982.26 and 290.25

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Solution

The fourth proportional to 655.29, 982.26 and 290.25 is: 435.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.29 : 982.26 = 290.25 : x
  2. Step 2: Convert to fraction form
    655.29/982.26 = 290.25/x
  3. Step 3: Cross multiply
    655.29x = 982.26 × 290.25
  4. Step 4: Simplify right side
    655.29x = 285,100.97
  5. Step 5: Solve for x
    x = 285,100.97/655.29
  6. Step 6: Final answer
    x = 435.08

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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.