Home / 28.33-42.40-26.31

Finding the Fourth Proportional to 28.33, 42.40 and 26.31

Calculator

Solution

The fourth proportional to 28.33, 42.40 and 26.31 is: 39.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.33 : 42.40 = 26.31 : x
  2. Step 2: Convert to fraction form
    28.33/42.40 = 26.31/x
  3. Step 3: Cross multiply
    28.33x = 42.40 × 26.31
  4. Step 4: Simplify right side
    28.33x = 1,115.54
  5. Step 5: Solve for x
    x = 1,115.54/28.33
  6. Step 6: Final answer
    x = 39.38

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.