Home / 380.64-525.36-225.36

Finding the Fourth Proportional to 380.64, 525.36 and 225.36

Calculator

Solution

The fourth proportional to 380.64, 525.36 and 225.36 is: 311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.64 : 525.36 = 225.36 : x
  2. Step 2: Convert to fraction form
    380.64/525.36 = 225.36/x
  3. Step 3: Cross multiply
    380.64x = 525.36 × 225.36
  4. Step 4: Simplify right side
    380.64x = 118,395.13
  5. Step 5: Solve for x
    x = 118,395.13/380.64
  6. Step 6: Final answer
    x = 311.04

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.