Home / 143-261

Finding the Third Proportional to 143 and 261

Calculator

Solution

The third proportional to 143 and 261 is: 476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143 : 261 = 261 : x
  2. Step 2: Convert to fraction form
    143/261 = 261/x
  3. Step 3: Cross multiply
    143x = 261 × 261
  4. Step 4: Simplify right side
    143x = 68,121
  5. Step 5: Solve for x
    x = 68,121/143
  6. Step 6: Final answer
    x = 476.37

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.83) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.