Home / 1,040.45-1,562.93-629.78

Finding the Fourth Proportional to 1,040.45, 1,562.93 and 629.78

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Solution

The fourth proportional to 1,040.45, 1,562.93 and 629.78 is: 946.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.45 : 1,562.93 = 629.78 : x
  2. Step 2: Convert to fraction form
    1,040.45/1,562.93 = 629.78/x
  3. Step 3: Cross multiply
    1,040.45x = 1,562.93 × 629.78
  4. Step 4: Simplify right side
    1,040.45x = 984,298.91
  5. Step 5: Solve for x
    x = 984,298.91/1,040.45
  6. Step 6: Final answer
    x = 946.03

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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.