Home / 463.29-639.41-288.69

Finding the Fourth Proportional to 463.29, 639.41 and 288.69

Calculator

Solution

The fourth proportional to 463.29, 639.41 and 288.69 is: 398.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.29 : 639.41 = 288.69 : x
  2. Step 2: Convert to fraction form
    463.29/639.41 = 288.69/x
  3. Step 3: Cross multiply
    463.29x = 639.41 × 288.69
  4. Step 4: Simplify right side
    463.29x = 184,591.27
  5. Step 5: Solve for x
    x = 184,591.27/463.29
  6. Step 6: Final answer
    x = 398.44

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.