Home / 723.40-1,079.84-670

Finding the Fourth Proportional to 723.40, 1,079.84 and 670

Calculator

Solution

The fourth proportional to 723.40, 1,079.84 and 670 is: 1,000.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.40 : 1,079.84 = 670 : x
  2. Step 2: Convert to fraction form
    723.40/1,079.84 = 670/x
  3. Step 3: Cross multiply
    723.40x = 1,079.84 × 670
  4. Step 4: Simplify right side
    723.40x = 723,492.80
  5. Step 5: Solve for x
    x = 723,492.80/723.40
  6. Step 6: Final answer
    x = 1,000.13

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.