Home / 199.80-298.17-153.90

Finding the Fourth Proportional to 199.80, 298.17 and 153.90

Calculator

Solution

The fourth proportional to 199.80, 298.17 and 153.90 is: 229.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.80 : 298.17 = 153.90 : x
  2. Step 2: Convert to fraction form
    199.80/298.17 = 153.90/x
  3. Step 3: Cross multiply
    199.80x = 298.17 × 153.90
  4. Step 4: Simplify right side
    199.80x = 45,888.36
  5. Step 5: Solve for x
    x = 45,888.36/199.80
  6. Step 6: Final answer
    x = 229.67

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.