Home / 878.97-1,317.68-331.18

Finding the Fourth Proportional to 878.97, 1,317.68 and 331.18

Calculator

Solution

The fourth proportional to 878.97, 1,317.68 and 331.18 is: 496.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    878.97 : 1,317.68 = 331.18 : x
  2. Step 2: Convert to fraction form
    878.97/1,317.68 = 331.18/x
  3. Step 3: Cross multiply
    878.97x = 1,317.68 × 331.18
  4. Step 4: Simplify right side
    878.97x = 436,389.26
  5. Step 5: Solve for x
    x = 436,389.26/878.97
  6. Step 6: Final answer
    x = 496.48

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.