Home / 30.69-66.23

Finding the Third Proportional to 30.69 and 66.23

Calculator

Solution

The third proportional to 30.69 and 66.23 is: 142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.69 : 66.23 = 66.23 : x
  2. Step 2: Convert to fraction form
    30.69/66.23 = 66.23/x
  3. Step 3: Cross multiply
    30.69x = 66.23 × 66.23
  4. Step 4: Simplify right side
    30.69x = 4,386.99
  5. Step 5: Solve for x
    x = 4,386.99/30.69
  6. Step 6: Final answer
    x = 142.94

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.