Home / 358.79-538.20-115.25

Finding the Fourth Proportional to 358.79, 538.20 and 115.25

Calculator

Solution

The fourth proportional to 358.79, 538.20 and 115.25 is: 172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.79 : 538.20 = 115.25 : x
  2. Step 2: Convert to fraction form
    358.79/538.20 = 115.25/x
  3. Step 3: Cross multiply
    358.79x = 538.20 × 115.25
  4. Step 4: Simplify right side
    358.79x = 62,024.86
  5. Step 5: Solve for x
    x = 62,024.86/358.79
  6. Step 6: Final answer
    x = 172.87

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.