Home / 1,126.85-1,554.90-629.43

Finding the Fourth Proportional to 1,126.85, 1,554.90 and 629.43

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Solution

The fourth proportional to 1,126.85, 1,554.90 and 629.43 is: 868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.85 : 1,554.90 = 629.43 : x
  2. Step 2: Convert to fraction form
    1,126.85/1,554.90 = 629.43/x
  3. Step 3: Cross multiply
    1,126.85x = 1,554.90 × 629.43
  4. Step 4: Simplify right side
    1,126.85x = 978,702.28
  5. Step 5: Solve for x
    x = 978,702.28/1,126.85
  6. Step 6: Final answer
    x = 868.53

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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.