Home / 565.51-780.36-316.78

Finding the Fourth Proportional to 565.51, 780.36 and 316.78

Calculator

Solution

The fourth proportional to 565.51, 780.36 and 316.78 is: 437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.51 : 780.36 = 316.78 : x
  2. Step 2: Convert to fraction form
    565.51/780.36 = 316.78/x
  3. Step 3: Cross multiply
    565.51x = 780.36 × 316.78
  4. Step 4: Simplify right side
    565.51x = 247,203.60
  5. Step 5: Solve for x
    x = 247,203.60/565.51
  6. Step 6: Final answer
    x = 437.14

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.