Home / 375.56-489.19

Finding the Third Proportional to 375.56 and 489.19

Calculator

Solution

The third proportional to 375.56 and 489.19 is: 637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.56 : 489.19 = 489.19 : x
  2. Step 2: Convert to fraction form
    375.56/489.19 = 489.19/x
  3. Step 3: Cross multiply
    375.56x = 489.19 × 489.19
  4. Step 4: Simplify right side
    375.56x = 239,304.41
  5. Step 5: Solve for x
    x = 239,304.41/375.56
  6. Step 6: Final answer
    x = 637.19

Related Problems

Find third proportional to 187.78 and 244.59
Half scale
Find third proportional to 751.13 and 978.38
Double scale
Find third proportional to 378 and 492
Similar ratio
Find third proportional to 563.34 and 733.78
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.