Home / 829-1,243.12-335.28

Finding the Fourth Proportional to 829, 1,243.12 and 335.28

Calculator

Solution

The fourth proportional to 829, 1,243.12 and 335.28 is: 502.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    829 : 1,243.12 = 335.28 : x
  2. Step 2: Convert to fraction form
    829/1,243.12 = 335.28/x
  3. Step 3: Cross multiply
    829x = 1,243.12 × 335.28
  4. Step 4: Simplify right side
    829x = 416,793.27
  5. Step 5: Solve for x
    x = 416,793.27/829
  6. Step 6: Final answer
    x = 502.77

Related Problems

Find fourth proportional to 414.50, 621.56 and 167.64
Half scale
Find fourth proportional to 1,658, 2,486.24 and 670.56
Double scale
Find fourth proportional to 830, 1,244.62 and 336.28
Similar ratio
Find fourth proportional to 1,243.50, 1,864.68 and 502.92
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.