Home / 531-771

Finding the Third Proportional to 531 and 771

Calculator

Solution

The third proportional to 531 and 771 is: 1,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    531 : 771 = 771 : x
  2. Step 2: Convert to fraction form
    531/771 = 771/x
  3. Step 3: Cross multiply
    531x = 771 × 771
  4. Step 4: Simplify right side
    531x = 594,441
  5. Step 5: Solve for x
    x = 594,441/531
  6. Step 6: Final answer
    x = 1,119.47

Related Problems

Find third proportional to 265.50 and 385.50
Half scale
Find third proportional to 1,062 and 1,542
Double scale
Find third proportional to 533 and 774
Similar ratio
Find third proportional to 796.50 and 1,156.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.