Home / 902-1,353-615.26

Finding the Fourth Proportional to 902, 1,353 and 615.26

Calculator

Solution

The fourth proportional to 902, 1,353 and 615.26 is: 922.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    902 : 1,353 = 615.26 : x
  2. Step 2: Convert to fraction form
    902/1,353 = 615.26/x
  3. Step 3: Cross multiply
    902x = 1,353 × 615.26
  4. Step 4: Simplify right side
    902x = 832,446.78
  5. Step 5: Solve for x
    x = 832,446.78/902
  6. Step 6: Final answer
    x = 922.89

Related Problems

Find fourth proportional to 451, 676.50 and 307.63
Half scale
Find fourth proportional to 1,804, 2,706 and 1,230.52
Double scale
Find fourth proportional to 903, 1,354.50 and 616.26
Similar ratio
Find fourth proportional to 1,353, 2,029.50 and 922.89
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.