Home / 442.20-610.20-255.68

Finding the Fourth Proportional to 442.20, 610.20 and 255.68

Calculator

Solution

The fourth proportional to 442.20, 610.20 and 255.68 is: 352.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.20 : 610.20 = 255.68 : x
  2. Step 2: Convert to fraction form
    442.20/610.20 = 255.68/x
  3. Step 3: Cross multiply
    442.20x = 610.20 × 255.68
  4. Step 4: Simplify right side
    442.20x = 156,015.94
  5. Step 5: Solve for x
    x = 156,015.94/442.20
  6. Step 6: Final answer
    x = 352.82

Related Problems

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.