Home / 403.38-605.07-129.47

Finding the Fourth Proportional to 403.38, 605.07 and 129.47

Calculator

Solution

The fourth proportional to 403.38, 605.07 and 129.47 is: 194.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.38 : 605.07 = 129.47 : x
  2. Step 2: Convert to fraction form
    403.38/605.07 = 129.47/x
  3. Step 3: Cross multiply
    403.38x = 605.07 × 129.47
  4. Step 4: Simplify right side
    403.38x = 78,335.39
  5. Step 5: Solve for x
    x = 78,335.39/403.38
  6. Step 6: Final answer
    x = 194.20

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.