Home / 635.55-876.88-386.99

Finding the Fourth Proportional to 635.55, 876.88 and 386.99

Calculator

Solution

The fourth proportional to 635.55, 876.88 and 386.99 is: 533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.55 : 876.88 = 386.99 : x
  2. Step 2: Convert to fraction form
    635.55/876.88 = 386.99/x
  3. Step 3: Cross multiply
    635.55x = 876.88 × 386.99
  4. Step 4: Simplify right side
    635.55x = 339,343.79
  5. Step 5: Solve for x
    x = 339,343.79/635.55
  6. Step 6: Final answer
    x = 533.94

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.