Home / 415.20-622.80-271.04

Finding the Fourth Proportional to 415.20, 622.80 and 271.04

Calculator

Solution

The fourth proportional to 415.20, 622.80 and 271.04 is: 406.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.20 : 622.80 = 271.04 : x
  2. Step 2: Convert to fraction form
    415.20/622.80 = 271.04/x
  3. Step 3: Cross multiply
    415.20x = 622.80 × 271.04
  4. Step 4: Simplify right side
    415.20x = 168,803.71
  5. Step 5: Solve for x
    x = 168,803.71/415.20
  6. Step 6: Final answer
    x = 406.56

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.