Home / 714.42-985.23-686.34

Finding the Fourth Proportional to 714.42, 985.23 and 686.34

Calculator

Solution

The fourth proportional to 714.42, 985.23 and 686.34 is: 946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.42 : 985.23 = 686.34 : x
  2. Step 2: Convert to fraction form
    714.42/985.23 = 686.34/x
  3. Step 3: Cross multiply
    714.42x = 985.23 × 686.34
  4. Step 4: Simplify right side
    714.42x = 676,202.76
  5. Step 5: Solve for x
    x = 676,202.76/714.42
  6. Step 6: Final answer
    x = 946.51

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.