Home / 709-1,064-253

Finding the Fourth Proportional to 709, 1,064 and 253

Calculator

Solution

The fourth proportional to 709, 1,064 and 253 is: 379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    709 : 1,064 = 253 : x
  2. Step 2: Convert to fraction form
    709/1,064 = 253/x
  3. Step 3: Cross multiply
    709x = 1,064 × 253
  4. Step 4: Simplify right side
    709x = 269,192
  5. Step 5: Solve for x
    x = 269,192/709
  6. Step 6: Final answer
    x = 379.68

Related Problems

Find fourth proportional to 354.50, 532 and 126.50
Half scale
Find fourth proportional to 1,418, 2,128 and 506
Double scale
Find fourth proportional to 710, 1,065.50 and 254
Similar ratio
Find fourth proportional to 1,063.50, 1,596 and 379.50
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.