Home / 282.48-423.65-99.85

Finding the Fourth Proportional to 282.48, 423.65 and 99.85

Calculator

Solution

The fourth proportional to 282.48, 423.65 and 99.85 is: 149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.48 : 423.65 = 99.85 : x
  2. Step 2: Convert to fraction form
    282.48/423.65 = 99.85/x
  3. Step 3: Cross multiply
    282.48x = 423.65 × 99.85
  4. Step 4: Simplify right side
    282.48x = 42,300.95
  5. Step 5: Solve for x
    x = 42,300.95/282.48
  6. Step 6: Final answer
    x = 149.75

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.