Home / 542-629

Finding the Third Proportional to 542 and 629

Calculator

Solution

The third proportional to 542 and 629 is: 729.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    542 : 629 = 629 : x
  2. Step 2: Convert to fraction form
    542/629 = 629/x
  3. Step 3: Cross multiply
    542x = 629 × 629
  4. Step 4: Simplify right side
    542x = 395,641
  5. Step 5: Solve for x
    x = 395,641/542
  6. Step 6: Final answer
    x = 729.96

Related Problems

Find third proportional to 271 and 314.50
Half scale
Find third proportional to 1,084 and 1,258
Double scale
Find third proportional to 544 and 631
Similar ratio
Find third proportional to 813 and 943.50
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.