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Finding the Fourth Proportional to 655.66, 984.05 and 381.37

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Solution

The fourth proportional to 655.66, 984.05 and 381.37 is: 572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.66 : 984.05 = 381.37 : x
  2. Step 2: Convert to fraction form
    655.66/984.05 = 381.37/x
  3. Step 3: Cross multiply
    655.66x = 984.05 × 381.37
  4. Step 4: Simplify right side
    655.66x = 375,287.15
  5. Step 5: Solve for x
    x = 375,287.15/655.66
  6. Step 6: Final answer
    x = 572.38

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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.