Home / 687-760.50

Finding the Third Proportional to 687 and 760.50

Calculator

Solution

The third proportional to 687 and 760.50 is: 841.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    687 : 760.50 = 760.50 : x
  2. Step 2: Convert to fraction form
    687/760.50 = 760.50/x
  3. Step 3: Cross multiply
    687x = 760.50 × 760.50
  4. Step 4: Simplify right side
    687x = 578,360.25
  5. Step 5: Solve for x
    x = 578,360.25/687
  6. Step 6: Final answer
    x = 841.86

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.