Home / 230.09-344.78-138.68

Finding the Fourth Proportional to 230.09, 344.78 and 138.68

Calculator

Solution

The fourth proportional to 230.09, 344.78 and 138.68 is: 207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.09 : 344.78 = 138.68 : x
  2. Step 2: Convert to fraction form
    230.09/344.78 = 138.68/x
  3. Step 3: Cross multiply
    230.09x = 344.78 × 138.68
  4. Step 4: Simplify right side
    230.09x = 47,814.09
  5. Step 5: Solve for x
    x = 47,814.09/230.09
  6. Step 6: Final answer
    x = 207.81

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.