Home / 340.50-553.50

Finding the Third Proportional to 340.50 and 553.50

Calculator

Solution

The third proportional to 340.50 and 553.50 is: 899.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.50 : 553.50 = 553.50 : x
  2. Step 2: Convert to fraction form
    340.50/553.50 = 553.50/x
  3. Step 3: Cross multiply
    340.50x = 553.50 × 553.50
  4. Step 4: Simplify right side
    340.50x = 306,362.25
  5. Step 5: Solve for x
    x = 306,362.25/340.50
  6. Step 6: Final answer
    x = 899.74

Related Problems

Find third proportional to 170.25 and 276.75
Half scale
Find third proportional to 681 and 1,107
Double scale
Find third proportional to 343 and 557
Similar ratio
Find third proportional to 510.75 and 830.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.