Home / 205.10-307.22-136.65

Finding the Fourth Proportional to 205.10, 307.22 and 136.65

Calculator

Solution

The fourth proportional to 205.10, 307.22 and 136.65 is: 204.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.10 : 307.22 = 136.65 : x
  2. Step 2: Convert to fraction form
    205.10/307.22 = 136.65/x
  3. Step 3: Cross multiply
    205.10x = 307.22 × 136.65
  4. Step 4: Simplify right side
    205.10x = 41,981.95
  5. Step 5: Solve for x
    x = 41,981.95/205.10
  6. Step 6: Final answer
    x = 204.70

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.