Home / 644.67-889.65-349.94

Finding the Fourth Proportional to 644.67, 889.65 and 349.94

Calculator

Solution

The fourth proportional to 644.67, 889.65 and 349.94 is: 482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.67 : 889.65 = 349.94 : x
  2. Step 2: Convert to fraction form
    644.67/889.65 = 349.94/x
  3. Step 3: Cross multiply
    644.67x = 889.65 × 349.94
  4. Step 4: Simplify right side
    644.67x = 311,319.67
  5. Step 5: Solve for x
    x = 311,319.67/644.67
  6. Step 6: Final answer
    x = 482.91

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.