Home / 263.80-395.69-142.30

Finding the Fourth Proportional to 263.80, 395.69 and 142.30

Calculator

Solution

The fourth proportional to 263.80, 395.69 and 142.30 is: 213.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.80 : 395.69 = 142.30 : x
  2. Step 2: Convert to fraction form
    263.80/395.69 = 142.30/x
  3. Step 3: Cross multiply
    263.80x = 395.69 × 142.30
  4. Step 4: Simplify right side
    263.80x = 56,306.69
  5. Step 5: Solve for x
    x = 56,306.69/263.80
  6. Step 6: Final answer
    x = 213.44

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.