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Finding the Fourth Proportional to 629.11, 866.78 and 549.82

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Solution

The fourth proportional to 629.11, 866.78 and 549.82 is: 757.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.11 : 866.78 = 549.82 : x
  2. Step 2: Convert to fraction form
    629.11/866.78 = 549.82/x
  3. Step 3: Cross multiply
    629.11x = 866.78 × 549.82
  4. Step 4: Simplify right side
    629.11x = 476,568.65
  5. Step 5: Solve for x
    x = 476,568.65/629.11
  6. Step 6: Final answer
    x = 757.53

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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.