Home / 556.09-767.40-307.43

Finding the Fourth Proportional to 556.09, 767.40 and 307.43

Calculator

Solution

The fourth proportional to 556.09, 767.40 and 307.43 is: 424.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.09 : 767.40 = 307.43 : x
  2. Step 2: Convert to fraction form
    556.09/767.40 = 307.43/x
  3. Step 3: Cross multiply
    556.09x = 767.40 × 307.43
  4. Step 4: Simplify right side
    556.09x = 235,916.79
  5. Step 5: Solve for x
    x = 235,916.79/556.09
  6. Step 6: Final answer
    x = 424.24

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.