Home / 771.98-1,157.61-447.44

Finding the Fourth Proportional to 771.98, 1,157.61 and 447.44

Calculator

Solution

The fourth proportional to 771.98, 1,157.61 and 447.44 is: 670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    771.98 : 1,157.61 = 447.44 : x
  2. Step 2: Convert to fraction form
    771.98/1,157.61 = 447.44/x
  3. Step 3: Cross multiply
    771.98x = 1,157.61 × 447.44
  4. Step 4: Simplify right side
    771.98x = 517,961.02
  5. Step 5: Solve for x
    x = 517,961.02/771.98
  6. Step 6: Final answer
    x = 670.95

Related Problems

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.