Home / 799-1,198.50-221.88

Finding the Fourth Proportional to 799, 1,198.50 and 221.88

Calculator

Solution

The fourth proportional to 799, 1,198.50 and 221.88 is: 332.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    799 : 1,198.50 = 221.88 : x
  2. Step 2: Convert to fraction form
    799/1,198.50 = 221.88/x
  3. Step 3: Cross multiply
    799x = 1,198.50 × 221.88
  4. Step 4: Simplify right side
    799x = 265,923.18
  5. Step 5: Solve for x
    x = 265,923.18/799
  6. Step 6: Final answer
    x = 332.82

Related Problems

Find fourth proportional to 399.50, 599.25 and 110.94
Half scale
Find fourth proportional to 1,598, 2,397 and 443.76
Double scale
Find fourth proportional to 800, 1,200 and 222.88
Similar ratio
Find fourth proportional to 1,198.50, 1,797.75 and 332.82
1.5x scale

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.