Home / 660.83-911.79-514.55

Finding the Fourth Proportional to 660.83, 911.79 and 514.55

Calculator

Solution

The fourth proportional to 660.83, 911.79 and 514.55 is: 709.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.83 : 911.79 = 514.55 : x
  2. Step 2: Convert to fraction form
    660.83/911.79 = 514.55/x
  3. Step 3: Cross multiply
    660.83x = 911.79 × 514.55
  4. Step 4: Simplify right side
    660.83x = 469,163.82
  5. Step 5: Solve for x
    x = 469,163.82/660.83
  6. Step 6: Final answer
    x = 709.97

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.