Home / 688.75-950.63-409.14

Finding the Fourth Proportional to 688.75, 950.63 and 409.14

Calculator

Solution

The fourth proportional to 688.75, 950.63 and 409.14 is: 564.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.75 : 950.63 = 409.14 : x
  2. Step 2: Convert to fraction form
    688.75/950.63 = 409.14/x
  3. Step 3: Cross multiply
    688.75x = 950.63 × 409.14
  4. Step 4: Simplify right side
    688.75x = 388,941.78
  5. Step 5: Solve for x
    x = 388,941.78/688.75
  6. Step 6: Final answer
    x = 564.71

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.