Home / 370.20-503.09

Finding the Third Proportional to 370.20 and 503.09

Calculator

Solution

The third proportional to 370.20 and 503.09 is: 683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.20 : 503.09 = 503.09 : x
  2. Step 2: Convert to fraction form
    370.20/503.09 = 503.09/x
  3. Step 3: Cross multiply
    370.20x = 503.09 × 503.09
  4. Step 4: Simplify right side
    370.20x = 253,095.46
  5. Step 5: Solve for x
    x = 253,095.46/370.20
  6. Step 6: Final answer
    x = 683.68

Related Problems

Find third proportional to 185.10 and 251.54
Half scale
Find third proportional to 740.39 and 1,006.17
Double scale
Find third proportional to 372 and 506
Similar ratio
Find third proportional to 555.29 and 754.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.