Home / 415.50-451

Finding the Third Proportional to 415.50 and 451

Calculator

Solution

The third proportional to 415.50 and 451 is: 489.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.50 : 451 = 451 : x
  2. Step 2: Convert to fraction form
    415.50/451 = 451/x
  3. Step 3: Cross multiply
    415.50x = 451 × 451
  4. Step 4: Simplify right side
    415.50x = 203,401
  5. Step 5: Solve for x
    x = 203,401/415.50
  6. Step 6: Final answer
    x = 489.53

Related Problems

Find third proportional to 207.75 and 225.50
Half scale
Find third proportional to 831 and 902
Double scale
Find third proportional to 418 and 453
Similar ratio
Find third proportional to 623.25 and 676.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.