Home / 485-522.50

Finding the Third Proportional to 485 and 522.50

Calculator

Solution

The third proportional to 485 and 522.50 is: 562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485 : 522.50 = 522.50 : x
  2. Step 2: Convert to fraction form
    485/522.50 = 522.50/x
  3. Step 3: Cross multiply
    485x = 522.50 × 522.50
  4. Step 4: Simplify right side
    485x = 273,006.25
  5. Step 5: Solve for x
    x = 273,006.25/485
  6. Step 6: Final answer
    x = 562.90

Related Problems

Find third proportional to 242.50 and 261.25
Half scale
Find third proportional to 970 and 1,045
Double scale
Find third proportional to 487 and 525
Similar ratio
Find third proportional to 727.50 and 783.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.