Home / 317.40-475.46-208.86

Finding the Fourth Proportional to 317.40, 475.46 and 208.86

Calculator

Solution

The fourth proportional to 317.40, 475.46 and 208.86 is: 312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.40 : 475.46 = 208.86 : x
  2. Step 2: Convert to fraction form
    317.40/475.46 = 208.86/x
  3. Step 3: Cross multiply
    317.40x = 475.46 × 208.86
  4. Step 4: Simplify right side
    317.40x = 99,304.58
  5. Step 5: Solve for x
    x = 99,304.58/317.40
  6. Step 6: Final answer
    x = 312.87

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.