Home / 768.80-1,061.82-507.98

Finding the Fourth Proportional to 768.80, 1,061.82 and 507.98

Calculator

Solution

The fourth proportional to 768.80, 1,061.82 and 507.98 is: 701.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.80 : 1,061.82 = 507.98 : x
  2. Step 2: Convert to fraction form
    768.80/1,061.82 = 507.98/x
  3. Step 3: Cross multiply
    768.80x = 1,061.82 × 507.98
  4. Step 4: Simplify right side
    768.80x = 539,383.32
  5. Step 5: Solve for x
    x = 539,383.32/768.80
  6. Step 6: Final answer
    x = 701.59

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.