Home / 256.50-557.72

Finding the Third Proportional to 256.50 and 557.72

Calculator

Solution

The third proportional to 256.50 and 557.72 is: 1,212.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.50 : 557.72 = 557.72 : x
  2. Step 2: Convert to fraction form
    256.50/557.72 = 557.72/x
  3. Step 3: Cross multiply
    256.50x = 557.72 × 557.72
  4. Step 4: Simplify right side
    256.50x = 311,050.20
  5. Step 5: Solve for x
    x = 311,050.20/256.50
  6. Step 6: Final answer
    x = 1,212.67

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.