Home / 449.42-620.31-274.91

Finding the Fourth Proportional to 449.42, 620.31 and 274.91

Calculator

Solution

The fourth proportional to 449.42, 620.31 and 274.91 is: 379.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.42 : 620.31 = 274.91 : x
  2. Step 2: Convert to fraction form
    449.42/620.31 = 274.91/x
  3. Step 3: Cross multiply
    449.42x = 620.31 × 274.91
  4. Step 4: Simplify right side
    449.42x = 170,526.32
  5. Step 5: Solve for x
    x = 170,526.32/449.42
  6. Step 6: Final answer
    x = 379.44

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.