Home / 455.72-683.42-211.96

Finding the Fourth Proportional to 455.72, 683.42 and 211.96

Calculator

Solution

The fourth proportional to 455.72, 683.42 and 211.96 is: 317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.72 : 683.42 = 211.96 : x
  2. Step 2: Convert to fraction form
    455.72/683.42 = 211.96/x
  3. Step 3: Cross multiply
    455.72x = 683.42 × 211.96
  4. Step 4: Simplify right side
    455.72x = 144,857.70
  5. Step 5: Solve for x
    x = 144,857.70/455.72
  6. Step 6: Final answer
    x = 317.87

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.