Home / 477-554

Finding the Third Proportional to 477 and 554

Calculator

Solution

The third proportional to 477 and 554 is: 643.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    477 : 554 = 554 : x
  2. Step 2: Convert to fraction form
    477/554 = 554/x
  3. Step 3: Cross multiply
    477x = 554 × 554
  4. Step 4: Simplify right side
    477x = 306,916
  5. Step 5: Solve for x
    x = 306,916/477
  6. Step 6: Final answer
    x = 643.43

Related Problems

Find third proportional to 238.50 and 277
Half scale
Find third proportional to 954 and 1,108
Double scale
Find third proportional to 479 and 556
Similar ratio
Find third proportional to 715.50 and 831
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.