Home / 354-619.50

Finding the Third Proportional to 354 and 619.50

Calculator

Solution

The third proportional to 354 and 619.50 is: 1,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    354 : 619.50 = 619.50 : x
  2. Step 2: Convert to fraction form
    354/619.50 = 619.50/x
  3. Step 3: Cross multiply
    354x = 619.50 × 619.50
  4. Step 4: Simplify right side
    354x = 383,780.25
  5. Step 5: Solve for x
    x = 383,780.25/354
  6. Step 6: Final answer
    x = 1,084.13

Related Problems

Find third proportional to 177 and 309.75
Half scale
Find third proportional to 708 and 1,239
Double scale
Find third proportional to 356 and 623
Similar ratio
Find third proportional to 531 and 929.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.