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Finding the Fourth Proportional to 655.97, 984.15 and 290.79

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Solution

The fourth proportional to 655.97, 984.15 and 290.79 is: 436.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.97 : 984.15 = 290.79 : x
  2. Step 2: Convert to fraction form
    655.97/984.15 = 290.79/x
  3. Step 3: Cross multiply
    655.97x = 984.15 × 290.79
  4. Step 4: Simplify right side
    655.97x = 286,180.98
  5. Step 5: Solve for x
    x = 286,180.98/655.97
  6. Step 6: Final answer
    x = 436.27

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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.