Home / 285.41-428.04-102.71

Finding the Fourth Proportional to 285.41, 428.04 and 102.71

Calculator

Solution

The fourth proportional to 285.41, 428.04 and 102.71 is: 154.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.41 : 428.04 = 102.71 : x
  2. Step 2: Convert to fraction form
    285.41/428.04 = 102.71/x
  3. Step 3: Cross multiply
    285.41x = 428.04 × 102.71
  4. Step 4: Simplify right side
    285.41x = 43,961.85
  5. Step 5: Solve for x
    x = 43,961.85/285.41
  6. Step 6: Final answer
    x = 154.03

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.