Home / 344.63-688.13

Finding the Third Proportional to 344.63 and 688.13

Calculator

Solution

The third proportional to 344.63 and 688.13 is: 1,374.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.63 : 688.13 = 688.13 : x
  2. Step 2: Convert to fraction form
    344.63/688.13 = 688.13/x
  3. Step 3: Cross multiply
    344.63x = 688.13 × 688.13
  4. Step 4: Simplify right side
    344.63x = 473,516.02
  5. Step 5: Solve for x
    x = 473,516.02/344.63
  6. Step 6: Final answer
    x = 1,374.00

Related Problems

Find third proportional to 172.31 and 344.06
Half scale
Find third proportional to 689.25 and 1,376.25
Double scale
Find third proportional to 347 and 692
Similar ratio
Find third proportional to 516.94 and 1,032.19
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.