Home / 477-631

Finding the Third Proportional to 477 and 631

Calculator

Solution

The third proportional to 477 and 631 is: 834.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    477 : 631 = 631 : x
  2. Step 2: Convert to fraction form
    477/631 = 631/x
  3. Step 3: Cross multiply
    477x = 631 × 631
  4. Step 4: Simplify right side
    477x = 398,161
  5. Step 5: Solve for x
    x = 398,161/477
  6. Step 6: Final answer
    x = 834.72

Related Problems

Find third proportional to 238.50 and 315.50
Half scale
Find third proportional to 954 and 1,262
Double scale
Find third proportional to 479 and 634
Similar ratio
Find third proportional to 715.50 and 946.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.