Home / 257.55-355.22-178.86

Finding the Fourth Proportional to 257.55, 355.22 and 178.86

Calculator

Solution

The fourth proportional to 257.55, 355.22 and 178.86 is: 246.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.55 : 355.22 = 178.86 : x
  2. Step 2: Convert to fraction form
    257.55/355.22 = 178.86/x
  3. Step 3: Cross multiply
    257.55x = 355.22 × 178.86
  4. Step 4: Simplify right side
    257.55x = 63,536.76
  5. Step 5: Solve for x
    x = 63,536.76/257.55
  6. Step 6: Final answer
    x = 246.70

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.