Home / 474-711-449.28

Finding the Fourth Proportional to 474, 711 and 449.28

Calculator

Solution

The fourth proportional to 474, 711 and 449.28 is: 673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    474 : 711 = 449.28 : x
  2. Step 2: Convert to fraction form
    474/711 = 449.28/x
  3. Step 3: Cross multiply
    474x = 711 × 449.28
  4. Step 4: Simplify right side
    474x = 319,438.08
  5. Step 5: Solve for x
    x = 319,438.08/474
  6. Step 6: Final answer
    x = 673.92

Related Problems

Find fourth proportional to 237, 355.50 and 224.64
Half scale
Find fourth proportional to 948, 1,422 and 898.56
Double scale
Find fourth proportional to 475, 712.50 and 450.28
Similar ratio
Find fourth proportional to 711, 1,066.50 and 673.92
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.