Home / 666.19-919.29-371.41

Finding the Fourth Proportional to 666.19, 919.29 and 371.41

Calculator

Solution

The fourth proportional to 666.19, 919.29 and 371.41 is: 512.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.19 : 919.29 = 371.41 : x
  2. Step 2: Convert to fraction form
    666.19/919.29 = 371.41/x
  3. Step 3: Cross multiply
    666.19x = 919.29 × 371.41
  4. Step 4: Simplify right side
    666.19x = 341,433.50
  5. Step 5: Solve for x
    x = 341,433.50/666.19
  6. Step 6: Final answer
    x = 512.52

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.