Home / 330.57-496.44-279.81

Finding the Fourth Proportional to 330.57, 496.44 and 279.81

Calculator

Solution

The fourth proportional to 330.57, 496.44 and 279.81 is: 420.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.57 : 496.44 = 279.81 : x
  2. Step 2: Convert to fraction form
    330.57/496.44 = 279.81/x
  3. Step 3: Cross multiply
    330.57x = 496.44 × 279.81
  4. Step 4: Simplify right side
    330.57x = 138,908.88
  5. Step 5: Solve for x
    x = 138,908.88/330.57
  6. Step 6: Final answer
    x = 420.21

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.