Home / 258.24-387.12-113.88

Finding the Fourth Proportional to 258.24, 387.12 and 113.88

Calculator

Solution

The fourth proportional to 258.24, 387.12 and 113.88 is: 170.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.24 : 387.12 = 113.88 : x
  2. Step 2: Convert to fraction form
    258.24/387.12 = 113.88/x
  3. Step 3: Cross multiply
    258.24x = 387.12 × 113.88
  4. Step 4: Simplify right side
    258.24x = 44,085.23
  5. Step 5: Solve for x
    x = 44,085.23/258.24
  6. Step 6: Final answer
    x = 170.71

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.