Home / 65.42-98.21-48.38

Finding the Fourth Proportional to 65.42, 98.21 and 48.38

Calculator

Solution

The fourth proportional to 65.42, 98.21 and 48.38 is: 72.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.42 : 98.21 = 48.38 : x
  2. Step 2: Convert to fraction form
    65.42/98.21 = 48.38/x
  3. Step 3: Cross multiply
    65.42x = 98.21 × 48.38
  4. Step 4: Simplify right side
    65.42x = 4,750.67
  5. Step 5: Solve for x
    x = 4,750.67/65.42
  6. Step 6: Final answer
    x = 72.62

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.