Home / 153.45-230.15-89.25

Finding the Fourth Proportional to 153.45, 230.15 and 89.25

Calculator

Solution

The fourth proportional to 153.45, 230.15 and 89.25 is: 133.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.45 : 230.15 = 89.25 : x
  2. Step 2: Convert to fraction form
    153.45/230.15 = 89.25/x
  3. Step 3: Cross multiply
    153.45x = 230.15 × 89.25
  4. Step 4: Simplify right side
    153.45x = 20,540.44
  5. Step 5: Solve for x
    x = 20,540.44/153.45
  6. Step 6: Final answer
    x = 133.86

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.