Home / 286-429-134

Finding the Fourth Proportional to 286, 429 and 134

Calculator

Solution

The fourth proportional to 286, 429 and 134 is: 201

Step by Step Solution

  1. Step 1: Write the proportion equation
    286 : 429 = 134 : x
  2. Step 2: Convert to fraction form
    286/429 = 134/x
  3. Step 3: Cross multiply
    286x = 429 × 134
  4. Step 4: Simplify right side
    286x = 57,486
  5. Step 5: Solve for x
    x = 57,486/286
  6. Step 6: Final answer
    x = 201

Related Problems

Find fourth proportional to 143, 214.50 and 67
Half scale
Find fourth proportional to 572, 858 and 268
Double scale
Find fourth proportional to 287, 430.50 and 135
Similar ratio
Find fourth proportional to 429, 643.50 and 201
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.