Home / 266.78-400.17-74.41

Finding the Fourth Proportional to 266.78, 400.17 and 74.41

Calculator

Solution

The fourth proportional to 266.78, 400.17 and 74.41 is: 111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.78 : 400.17 = 74.41 : x
  2. Step 2: Convert to fraction form
    266.78/400.17 = 74.41/x
  3. Step 3: Cross multiply
    266.78x = 400.17 × 74.41
  4. Step 4: Simplify right side
    266.78x = 29,774.65
  5. Step 5: Solve for x
    x = 29,774.65/266.78
  6. Step 6: Final answer
    x = 111.61

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.