Home / 856.41-1,284.77-308.58

Finding the Fourth Proportional to 856.41, 1,284.77 and 308.58

Calculator

Solution

The fourth proportional to 856.41, 1,284.77 and 308.58 is: 462.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.41 : 1,284.77 = 308.58 : x
  2. Step 2: Convert to fraction form
    856.41/1,284.77 = 308.58/x
  3. Step 3: Cross multiply
    856.41x = 1,284.77 × 308.58
  4. Step 4: Simplify right side
    856.41x = 396,454.33
  5. Step 5: Solve for x
    x = 396,454.33/856.41
  6. Step 6: Final answer
    x = 462.93

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.