Home / 248.81-423.19

Finding the Third Proportional to 248.81 and 423.19

Calculator

Solution

The third proportional to 248.81 and 423.19 is: 719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.81 : 423.19 = 423.19 : x
  2. Step 2: Convert to fraction form
    248.81/423.19 = 423.19/x
  3. Step 3: Cross multiply
    248.81x = 423.19 × 423.19
  4. Step 4: Simplify right side
    248.81x = 179,087.66
  5. Step 5: Solve for x
    x = 179,087.66/248.81
  6. Step 6: Final answer
    x = 719.77

Related Problems

Find third proportional to 124.41 and 211.59
Half scale
Find third proportional to 497.63 and 846.38
Double scale
Find third proportional to 251 and 427
Similar ratio
Find third proportional to 373.22 and 634.78
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.