Home / 986.16-1,479.19-499.20

Finding the Fourth Proportional to 986.16, 1,479.19 and 499.20

Calculator

Solution

The fourth proportional to 986.16, 1,479.19 and 499.20 is: 748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.16 : 1,479.19 = 499.20 : x
  2. Step 2: Convert to fraction form
    986.16/1,479.19 = 499.20/x
  3. Step 3: Cross multiply
    986.16x = 1,479.19 × 499.20
  4. Step 4: Simplify right side
    986.16x = 738,404.39
  5. Step 5: Solve for x
    x = 738,404.39/986.16
  6. Step 6: Final answer
    x = 748.77

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.