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Finding the Fourth Proportional to 629.53, 941.96 and 381.80

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Solution

The fourth proportional to 629.53, 941.96 and 381.80 is: 571.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.53 : 941.96 = 381.80 : x
  2. Step 2: Convert to fraction form
    629.53/941.96 = 381.80/x
  3. Step 3: Cross multiply
    629.53x = 941.96 × 381.80
  4. Step 4: Simplify right side
    629.53x = 359,643.64
  5. Step 5: Solve for x
    x = 359,643.64/629.53
  6. Step 6: Final answer
    x = 571.29

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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.