Home / 418-528

Finding the Third Proportional to 418 and 528

Calculator

Solution

The third proportional to 418 and 528 is: 666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418 : 528 = 528 : x
  2. Step 2: Convert to fraction form
    418/528 = 528/x
  3. Step 3: Cross multiply
    418x = 528 × 528
  4. Step 4: Simplify right side
    418x = 278,784
  5. Step 5: Solve for x
    x = 278,784/418
  6. Step 6: Final answer
    x = 666.95

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.