Home / 287-430.50-116

Finding the Fourth Proportional to 287, 430.50 and 116

Calculator

Solution

The fourth proportional to 287, 430.50 and 116 is: 174

Step by Step Solution

  1. Step 1: Write the proportion equation
    287 : 430.50 = 116 : x
  2. Step 2: Convert to fraction form
    287/430.50 = 116/x
  3. Step 3: Cross multiply
    287x = 430.50 × 116
  4. Step 4: Simplify right side
    287x = 49,938
  5. Step 5: Solve for x
    x = 49,938/287
  6. Step 6: Final answer
    x = 174

Related Problems

Find fourth proportional to 143.50, 215.25 and 58
Half scale
Find fourth proportional to 574, 861 and 232
Double scale
Find fourth proportional to 288, 432 and 117
Similar ratio
Find fourth proportional to 430.50, 645.75 and 174
1.5x scale

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.