Home / 358-427

Finding the Third Proportional to 358 and 427

Calculator

Solution

The third proportional to 358 and 427 is: 509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    358 : 427 = 427 : x
  2. Step 2: Convert to fraction form
    358/427 = 427/x
  3. Step 3: Cross multiply
    358x = 427 × 427
  4. Step 4: Simplify right side
    358x = 182,329
  5. Step 5: Solve for x
    x = 182,329/358
  6. Step 6: Final answer
    x = 509.30

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.