Home / 501-551

Finding the Third Proportional to 501 and 551

Calculator

Solution

The third proportional to 501 and 551 is: 605.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    501 : 551 = 551 : x
  2. Step 2: Convert to fraction form
    501/551 = 551/x
  3. Step 3: Cross multiply
    501x = 551 × 551
  4. Step 4: Simplify right side
    501x = 303,601
  5. Step 5: Solve for x
    x = 303,601/501
  6. Step 6: Final answer
    x = 605.99

Related Problems

Find third proportional to 250.50 and 275.50
Half scale
Find third proportional to 1,002 and 1,102
Double scale
Find third proportional to 503 and 553
Similar ratio
Find third proportional to 751.50 and 826.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.