Home / 259.88-555.19

Finding the Third Proportional to 259.88 and 555.19

Calculator

Solution

The third proportional to 259.88 and 555.19 is: 1,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.88 : 555.19 = 555.19 : x
  2. Step 2: Convert to fraction form
    259.88/555.19 = 555.19/x
  3. Step 3: Cross multiply
    259.88x = 555.19 × 555.19
  4. Step 4: Simplify right side
    259.88x = 308,233.16
  5. Step 5: Solve for x
    x = 308,233.16/259.88
  6. Step 6: Final answer
    x = 1,186.08

Related Problems

Find third proportional to 129.94 and 277.59
Half scale
Find third proportional to 519.75 and 1,110.38
Double scale
Find third proportional to 262 and 559
Similar ratio
Find third proportional to 389.81 and 832.78
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.