Home / 386.24-578.84-142.53

Finding the Fourth Proportional to 386.24, 578.84 and 142.53

Calculator

Solution

The fourth proportional to 386.24, 578.84 and 142.53 is: 213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.24 : 578.84 = 142.53 : x
  2. Step 2: Convert to fraction form
    386.24/578.84 = 142.53/x
  3. Step 3: Cross multiply
    386.24x = 578.84 × 142.53
  4. Step 4: Simplify right side
    386.24x = 82,501.35
  5. Step 5: Solve for x
    x = 82,501.35/386.24
  6. Step 6: Final answer
    x = 213.60

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.