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Finding the Fourth Proportional to 1,041, 1,559.40 and 629.88

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Solution

The fourth proportional to 1,041, 1,559.40 and 629.88 is: 943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041 : 1,559.40 = 629.88 : x
  2. Step 2: Convert to fraction form
    1,041/1,559.40 = 629.88/x
  3. Step 3: Cross multiply
    1,041x = 1,559.40 × 629.88
  4. Step 4: Simplify right side
    1,041x = 982,234.87
  5. Step 5: Solve for x
    x = 982,234.87/1,041
  6. Step 6: Final answer
    x = 943.55

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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.