Home / 885.05-1,221.41-492.20

Finding the Fourth Proportional to 885.05, 1,221.41 and 492.20

Calculator

Solution

The fourth proportional to 885.05, 1,221.41 and 492.20 is: 679.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.05 : 1,221.41 = 492.20 : x
  2. Step 2: Convert to fraction form
    885.05/1,221.41 = 492.20/x
  3. Step 3: Cross multiply
    885.05x = 1,221.41 × 492.20
  4. Step 4: Simplify right side
    885.05x = 601,178.00
  5. Step 5: Solve for x
    x = 601,178.00/885.05
  6. Step 6: Final answer
    x = 679.26

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.