Home / 266.04-398.88-128.96

Finding the Fourth Proportional to 266.04, 398.88 and 128.96

Calculator

Solution

The fourth proportional to 266.04, 398.88 and 128.96 is: 193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.04 : 398.88 = 128.96 : x
  2. Step 2: Convert to fraction form
    266.04/398.88 = 128.96/x
  3. Step 3: Cross multiply
    266.04x = 398.88 × 128.96
  4. Step 4: Simplify right side
    266.04x = 51,439.56
  5. Step 5: Solve for x
    x = 51,439.56/266.04
  6. Step 6: Final answer
    x = 193.35

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.