Home / 611.84-843.72-401.60

Finding the Fourth Proportional to 611.84, 843.72 and 401.60

Calculator

Solution

The fourth proportional to 611.84, 843.72 and 401.60 is: 553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.84 : 843.72 = 401.60 : x
  2. Step 2: Convert to fraction form
    611.84/843.72 = 401.60/x
  3. Step 3: Cross multiply
    611.84x = 843.72 × 401.60
  4. Step 4: Simplify right side
    611.84x = 338,837.95
  5. Step 5: Solve for x
    x = 338,837.95/611.84
  6. Step 6: Final answer
    x = 553.80

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.