Home / 209.39-312.66-180.23

Finding the Fourth Proportional to 209.39, 312.66 and 180.23

Calculator

Solution

The fourth proportional to 209.39, 312.66 and 180.23 is: 269.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.39 : 312.66 = 180.23 : x
  2. Step 2: Convert to fraction form
    209.39/312.66 = 180.23/x
  3. Step 3: Cross multiply
    209.39x = 312.66 × 180.23
  4. Step 4: Simplify right side
    209.39x = 56,349.15
  5. Step 5: Solve for x
    x = 56,349.15/209.39
  6. Step 6: Final answer
    x = 269.12

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.