Home / 395.30-545.54-220.64

Finding the Fourth Proportional to 395.30, 545.54 and 220.64

Calculator

Solution

The fourth proportional to 395.30, 545.54 and 220.64 is: 304.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.30 : 545.54 = 220.64 : x
  2. Step 2: Convert to fraction form
    395.30/545.54 = 220.64/x
  3. Step 3: Cross multiply
    395.30x = 545.54 × 220.64
  4. Step 4: Simplify right side
    395.30x = 120,367.18
  5. Step 5: Solve for x
    x = 120,367.18/395.30
  6. Step 6: Final answer
    x = 304.50

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.