Home / 693.78-1,041.18-328.57

Finding the Fourth Proportional to 693.78, 1,041.18 and 328.57

Calculator

Solution

The fourth proportional to 693.78, 1,041.18 and 328.57 is: 493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.78 : 1,041.18 = 328.57 : x
  2. Step 2: Convert to fraction form
    693.78/1,041.18 = 328.57/x
  3. Step 3: Cross multiply
    693.78x = 1,041.18 × 328.57
  4. Step 4: Simplify right side
    693.78x = 342,099.81
  5. Step 5: Solve for x
    x = 342,099.81/693.78
  6. Step 6: Final answer
    x = 493.10

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.