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Finding the Fourth Proportional to 629.69, 869.00 and 367.79

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Solution

The fourth proportional to 629.69, 869.00 and 367.79 is: 507.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.69 : 869.00 = 367.79 : x
  2. Step 2: Convert to fraction form
    629.69/869.00 = 367.79/x
  3. Step 3: Cross multiply
    629.69x = 869.00 × 367.79
  4. Step 4: Simplify right side
    629.69x = 319,603.33
  5. Step 5: Solve for x
    x = 319,603.33/629.69
  6. Step 6: Final answer
    x = 507.56

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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.