Home / 159.20-218.11-153.05

Finding the Fourth Proportional to 159.20, 218.11 and 153.05

Calculator

Solution

The fourth proportional to 159.20, 218.11 and 153.05 is: 209.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.20 : 218.11 = 153.05 : x
  2. Step 2: Convert to fraction form
    159.20/218.11 = 153.05/x
  3. Step 3: Cross multiply
    159.20x = 218.11 × 153.05
  4. Step 4: Simplify right side
    159.20x = 33,382.41
  5. Step 5: Solve for x
    x = 33,382.41/159.20
  6. Step 6: Final answer
    x = 209.68

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.