Home / 700.42-1,049.19-691.78

Finding the Fourth Proportional to 700.42, 1,049.19 and 691.78

Calculator

Solution

The fourth proportional to 700.42, 1,049.19 and 691.78 is: 1,036.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.42 : 1,049.19 = 691.78 : x
  2. Step 2: Convert to fraction form
    700.42/1,049.19 = 691.78/x
  3. Step 3: Cross multiply
    700.42x = 1,049.19 × 691.78
  4. Step 4: Simplify right side
    700.42x = 725,808.66
  5. Step 5: Solve for x
    x = 725,808.66/700.42
  6. Step 6: Final answer
    x = 1,036.25

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.