Home / 691.12-1,035.24-326.20

Finding the Fourth Proportional to 691.12, 1,035.24 and 326.20

Calculator

Solution

The fourth proportional to 691.12, 1,035.24 and 326.20 is: 488.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.12 : 1,035.24 = 326.20 : x
  2. Step 2: Convert to fraction form
    691.12/1,035.24 = 326.20/x
  3. Step 3: Cross multiply
    691.12x = 1,035.24 × 326.20
  4. Step 4: Simplify right side
    691.12x = 337,695.29
  5. Step 5: Solve for x
    x = 337,695.29/691.12
  6. Step 6: Final answer
    x = 488.62

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.