Home / 373.50-490.75

Finding the Third Proportional to 373.50 and 490.75

Calculator

Solution

The third proportional to 373.50 and 490.75 is: 644.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.50 : 490.75 = 490.75 : x
  2. Step 2: Convert to fraction form
    373.50/490.75 = 490.75/x
  3. Step 3: Cross multiply
    373.50x = 490.75 × 490.75
  4. Step 4: Simplify right side
    373.50x = 240,835.56
  5. Step 5: Solve for x
    x = 240,835.56/373.50
  6. Step 6: Final answer
    x = 644.81

Related Problems

Find third proportional to 186.75 and 245.38
Half scale
Find third proportional to 747 and 981.50
Double scale
Find third proportional to 376 and 493
Similar ratio
Find third proportional to 560.25 and 736.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.