Home / 517.79-715.01-386.57

Finding the Fourth Proportional to 517.79, 715.01 and 386.57

Calculator

Solution

The fourth proportional to 517.79, 715.01 and 386.57 is: 533.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.79 : 715.01 = 386.57 : x
  2. Step 2: Convert to fraction form
    517.79/715.01 = 386.57/x
  3. Step 3: Cross multiply
    517.79x = 715.01 × 386.57
  4. Step 4: Simplify right side
    517.79x = 276,401.42
  5. Step 5: Solve for x
    x = 276,401.42/517.79
  6. Step 6: Final answer
    x = 533.81

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.