Home / 217.78-300.44-134.72

Finding the Fourth Proportional to 217.78, 300.44 and 134.72

Calculator

Solution

The fourth proportional to 217.78, 300.44 and 134.72 is: 185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.78 : 300.44 = 134.72 : x
  2. Step 2: Convert to fraction form
    217.78/300.44 = 134.72/x
  3. Step 3: Cross multiply
    217.78x = 300.44 × 134.72
  4. Step 4: Simplify right side
    217.78x = 40,475.28
  5. Step 5: Solve for x
    x = 40,475.28/217.78
  6. Step 6: Final answer
    x = 185.85

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.