Home / 840.89-1,160.50-486.94

Finding the Fourth Proportional to 840.89, 1,160.50 and 486.94

Calculator

Solution

The fourth proportional to 840.89, 1,160.50 and 486.94 is: 672.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    840.89 : 1,160.50 = 486.94 : x
  2. Step 2: Convert to fraction form
    840.89/1,160.50 = 486.94/x
  3. Step 3: Cross multiply
    840.89x = 1,160.50 × 486.94
  4. Step 4: Simplify right side
    840.89x = 565,093.87
  5. Step 5: Solve for x
    x = 565,093.87/840.89
  6. Step 6: Final answer
    x = 672.02

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.