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Finding the Fourth Proportional to 655.87, 984.07 and 245.13

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Solution

The fourth proportional to 655.87, 984.07 and 245.13 is: 367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.87 : 984.07 = 245.13 : x
  2. Step 2: Convert to fraction form
    655.87/984.07 = 245.13/x
  3. Step 3: Cross multiply
    655.87x = 984.07 × 245.13
  4. Step 4: Simplify right side
    655.87x = 241,222.38
  5. Step 5: Solve for x
    x = 241,222.38/655.87
  6. Step 6: Final answer
    x = 367.79

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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.