Home / 549-628.50

Finding the Third Proportional to 549 and 628.50

Calculator

Solution

The third proportional to 549 and 628.50 is: 719.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    549 : 628.50 = 628.50 : x
  2. Step 2: Convert to fraction form
    549/628.50 = 628.50/x
  3. Step 3: Cross multiply
    549x = 628.50 × 628.50
  4. Step 4: Simplify right side
    549x = 395,012.25
  5. Step 5: Solve for x
    x = 395,012.25/549
  6. Step 6: Final answer
    x = 719.51

Related Problems

Find third proportional to 274.50 and 314.25
Half scale
Find third proportional to 1,098 and 1,257
Double scale
Find third proportional to 551 and 631
Similar ratio
Find third proportional to 823.50 and 942.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.