Home / 307.68-424.56-189.68

Finding the Fourth Proportional to 307.68, 424.56 and 189.68

Calculator

Solution

The fourth proportional to 307.68, 424.56 and 189.68 is: 261.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.68 : 424.56 = 189.68 : x
  2. Step 2: Convert to fraction form
    307.68/424.56 = 189.68/x
  3. Step 3: Cross multiply
    307.68x = 424.56 × 189.68
  4. Step 4: Simplify right side
    307.68x = 80,530.54
  5. Step 5: Solve for x
    x = 80,530.54/307.68
  6. Step 6: Final answer
    x = 261.73

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.