Home / 608-990

Finding the Third Proportional to 608 and 990

Calculator

Solution

The third proportional to 608 and 990 is: 1,612.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    608 : 990 = 990 : x
  2. Step 2: Convert to fraction form
    608/990 = 990/x
  3. Step 3: Cross multiply
    608x = 990 × 990
  4. Step 4: Simplify right side
    608x = 980,100
  5. Step 5: Solve for x
    x = 980,100/608
  6. Step 6: Final answer
    x = 1,612.01

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.