Home / 528.19-757.69

Finding the Third Proportional to 528.19 and 757.69

Calculator

Solution

The third proportional to 528.19 and 757.69 is: 1,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.19 : 757.69 = 757.69 : x
  2. Step 2: Convert to fraction form
    528.19/757.69 = 757.69/x
  3. Step 3: Cross multiply
    528.19x = 757.69 × 757.69
  4. Step 4: Simplify right side
    528.19x = 574,090.35
  5. Step 5: Solve for x
    x = 574,090.35/528.19
  6. Step 6: Final answer
    x = 1,086.91

Related Problems

Find third proportional to 264.09 and 378.84
Half scale
Find third proportional to 1,056.38 and 1,515.38
Double scale
Find third proportional to 530 and 761
Similar ratio
Find third proportional to 792.28 and 1,136.53
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.