Home / 319.72-479.58-103.25

Finding the Fourth Proportional to 319.72, 479.58 and 103.25

Calculator

Solution

The fourth proportional to 319.72, 479.58 and 103.25 is: 154.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.72 : 479.58 = 103.25 : x
  2. Step 2: Convert to fraction form
    319.72/479.58 = 103.25/x
  3. Step 3: Cross multiply
    319.72x = 479.58 × 103.25
  4. Step 4: Simplify right side
    319.72x = 49,516.64
  5. Step 5: Solve for x
    x = 49,516.64/319.72
  6. Step 6: Final answer
    x = 154.88

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.