Home / 243.29-335.69-138.38

Finding the Fourth Proportional to 243.29, 335.69 and 138.38

Calculator

Solution

The fourth proportional to 243.29, 335.69 and 138.38 is: 190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.29 : 335.69 = 138.38 : x
  2. Step 2: Convert to fraction form
    243.29/335.69 = 138.38/x
  3. Step 3: Cross multiply
    243.29x = 335.69 × 138.38
  4. Step 4: Simplify right side
    243.29x = 46,450.41
  5. Step 5: Solve for x
    x = 46,450.41/243.29
  6. Step 6: Final answer
    x = 190.93

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.