Home / 515.72-773.66-227.24

Finding the Fourth Proportional to 515.72, 773.66 and 227.24

Calculator

Solution

The fourth proportional to 515.72, 773.66 and 227.24 is: 340.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.72 : 773.66 = 227.24 : x
  2. Step 2: Convert to fraction form
    515.72/773.66 = 227.24/x
  3. Step 3: Cross multiply
    515.72x = 773.66 × 227.24
  4. Step 4: Simplify right side
    515.72x = 175,806.50
  5. Step 5: Solve for x
    x = 175,806.50/515.72
  6. Step 6: Final answer
    x = 340.90

Related Problems

Find fourth proportional to 257.86, 386.83 and 113.62
Half scale
Find fourth proportional to 1,031.44, 1,547.32 and 454.48
Double scale
Find fourth proportional to 516.72, 775.16 and 228.24
Similar ratio
Find fourth proportional to 773.58, 1,160.49 and 340.86
1.5x scale

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.