Home / 654.71-981.45-289.08

Finding the Fourth Proportional to 654.71, 981.45 and 289.08

Calculator

Solution

The fourth proportional to 654.71, 981.45 and 289.08 is: 433.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.71 : 981.45 = 289.08 : x
  2. Step 2: Convert to fraction form
    654.71/981.45 = 289.08/x
  3. Step 3: Cross multiply
    654.71x = 981.45 × 289.08
  4. Step 4: Simplify right side
    654.71x = 283,717.57
  5. Step 5: Solve for x
    x = 283,717.57/654.71
  6. Step 6: Final answer
    x = 433.35

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.