Home / 280.77-421.08-126.73

Finding the Fourth Proportional to 280.77, 421.08 and 126.73

Calculator

Solution

The fourth proportional to 280.77, 421.08 and 126.73 is: 190.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.77 : 421.08 = 126.73 : x
  2. Step 2: Convert to fraction form
    280.77/421.08 = 126.73/x
  3. Step 3: Cross multiply
    280.77x = 421.08 × 126.73
  4. Step 4: Simplify right side
    280.77x = 53,363.47
  5. Step 5: Solve for x
    x = 53,363.47/280.77
  6. Step 6: Final answer
    x = 190.06

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.