Home / 449.55-620.39-253.06

Finding the Fourth Proportional to 449.55, 620.39 and 253.06

Calculator

Solution

The fourth proportional to 449.55, 620.39 and 253.06 is: 349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.55 : 620.39 = 253.06 : x
  2. Step 2: Convert to fraction form
    449.55/620.39 = 253.06/x
  3. Step 3: Cross multiply
    449.55x = 620.39 × 253.06
  4. Step 4: Simplify right side
    449.55x = 156,995.89
  5. Step 5: Solve for x
    x = 156,995.89/449.55
  6. Step 6: Final answer
    x = 349.23

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.