Home / 91.37-137.03-30.48

Finding the Fourth Proportional to 91.37, 137.03 and 30.48

Calculator

Solution

The fourth proportional to 91.37, 137.03 and 30.48 is: 45.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.37 : 137.03 = 30.48 : x
  2. Step 2: Convert to fraction form
    91.37/137.03 = 30.48/x
  3. Step 3: Cross multiply
    91.37x = 137.03 × 30.48
  4. Step 4: Simplify right side
    91.37x = 4,176.52
  5. Step 5: Solve for x
    x = 4,176.52/91.37
  6. Step 6: Final answer
    x = 45.71

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.