Home / 201.02-301.55-85.46

Finding the Fourth Proportional to 201.02, 301.55 and 85.46

Calculator

Solution

The fourth proportional to 201.02, 301.55 and 85.46 is: 128.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.02 : 301.55 = 85.46 : x
  2. Step 2: Convert to fraction form
    201.02/301.55 = 85.46/x
  3. Step 3: Cross multiply
    201.02x = 301.55 × 85.46
  4. Step 4: Simplify right side
    201.02x = 25,768.53
  5. Step 5: Solve for x
    x = 25,768.53/201.02
  6. Step 6: Final answer
    x = 128.19

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.