Home / 814.39-1,123.81-465.08

Finding the Fourth Proportional to 814.39, 1,123.81 and 465.08

Calculator

Solution

The fourth proportional to 814.39, 1,123.81 and 465.08 is: 641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.39 : 1,123.81 = 465.08 : x
  2. Step 2: Convert to fraction form
    814.39/1,123.81 = 465.08/x
  3. Step 3: Cross multiply
    814.39x = 1,123.81 × 465.08
  4. Step 4: Simplify right side
    814.39x = 522,654.77
  5. Step 5: Solve for x
    x = 522,654.77/814.39
  6. Step 6: Final answer
    x = 641.78

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.