Home / 313.43-432.47-208.40

Finding the Fourth Proportional to 313.43, 432.47 and 208.40

Calculator

Solution

The fourth proportional to 313.43, 432.47 and 208.40 is: 287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.43 : 432.47 = 208.40 : x
  2. Step 2: Convert to fraction form
    313.43/432.47 = 208.40/x
  3. Step 3: Cross multiply
    313.43x = 432.47 × 208.40
  4. Step 4: Simplify right side
    313.43x = 90,125.71
  5. Step 5: Solve for x
    x = 90,125.71/313.43
  6. Step 6: Final answer
    x = 287.55

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.