Home / 761.87-1,142.85-214.01

Finding the Fourth Proportional to 761.87, 1,142.85 and 214.01

Calculator

Solution

The fourth proportional to 761.87, 1,142.85 and 214.01 is: 321.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.87 : 1,142.85 = 214.01 : x
  2. Step 2: Convert to fraction form
    761.87/1,142.85 = 214.01/x
  3. Step 3: Cross multiply
    761.87x = 1,142.85 × 214.01
  4. Step 4: Simplify right side
    761.87x = 244,577.83
  5. Step 5: Solve for x
    x = 244,577.83/761.87
  6. Step 6: Final answer
    x = 321.02

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.