Home / 959.09-1,320.44-663.84

Finding the Fourth Proportional to 959.09, 1,320.44 and 663.84

Calculator

Solution

The fourth proportional to 959.09, 1,320.44 and 663.84 is: 913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.09 : 1,320.44 = 663.84 : x
  2. Step 2: Convert to fraction form
    959.09/1,320.44 = 663.84/x
  3. Step 3: Cross multiply
    959.09x = 1,320.44 × 663.84
  4. Step 4: Simplify right side
    959.09x = 876,557.57
  5. Step 5: Solve for x
    x = 876,557.57/959.09
  6. Step 6: Final answer
    x = 913.95

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.