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Finding the Fourth Proportional to 629.09, 867.56 and 504.75

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Solution

The fourth proportional to 629.09, 867.56 and 504.75 is: 696.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.09 : 867.56 = 504.75 : x
  2. Step 2: Convert to fraction form
    629.09/867.56 = 504.75/x
  3. Step 3: Cross multiply
    629.09x = 867.56 × 504.75
  4. Step 4: Simplify right side
    629.09x = 437,900.91
  5. Step 5: Solve for x
    x = 437,900.91/629.09
  6. Step 6: Final answer
    x = 696.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.