Home / 256.78-385.22-112.50

Finding the Fourth Proportional to 256.78, 385.22 and 112.50

Calculator

Solution

The fourth proportional to 256.78, 385.22 and 112.50 is: 168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.78 : 385.22 = 112.50 : x
  2. Step 2: Convert to fraction form
    256.78/385.22 = 112.50/x
  3. Step 3: Cross multiply
    256.78x = 385.22 × 112.50
  4. Step 4: Simplify right side
    256.78x = 43,337.53
  5. Step 5: Solve for x
    x = 43,337.53/256.78
  6. Step 6: Final answer
    x = 168.77

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.