Home / 715.02-986.75-404.54

Finding the Fourth Proportional to 715.02, 986.75 and 404.54

Calculator

Solution

The fourth proportional to 715.02, 986.75 and 404.54 is: 558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.02 : 986.75 = 404.54 : x
  2. Step 2: Convert to fraction form
    715.02/986.75 = 404.54/x
  3. Step 3: Cross multiply
    715.02x = 986.75 × 404.54
  4. Step 4: Simplify right side
    715.02x = 399,179.85
  5. Step 5: Solve for x
    x = 399,179.85/715.02
  6. Step 6: Final answer
    x = 558.28

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.