Home / 266.44-399.55-129.45

Finding the Fourth Proportional to 266.44, 399.55 and 129.45

Calculator

Solution

The fourth proportional to 266.44, 399.55 and 129.45 is: 194.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.44 : 399.55 = 129.45 : x
  2. Step 2: Convert to fraction form
    266.44/399.55 = 129.45/x
  3. Step 3: Cross multiply
    266.44x = 399.55 × 129.45
  4. Step 4: Simplify right side
    266.44x = 51,721.75
  5. Step 5: Solve for x
    x = 51,721.75/266.44
  6. Step 6: Final answer
    x = 194.12

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.