Home / 254.78-351.86-167.70

Finding the Fourth Proportional to 254.78, 351.86 and 167.70

Calculator

Solution

The fourth proportional to 254.78, 351.86 and 167.70 is: 231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.78 : 351.86 = 167.70 : x
  2. Step 2: Convert to fraction form
    254.78/351.86 = 167.70/x
  3. Step 3: Cross multiply
    254.78x = 351.86 × 167.70
  4. Step 4: Simplify right side
    254.78x = 59,006.08
  5. Step 5: Solve for x
    x = 59,006.08/254.78
  6. Step 6: Final answer
    x = 231.60

Related Problems

Find fourth proportional to 127.39, 175.93 and 83.85
Half scale
Find fourth proportional to 509.55, 703.71 and 335.40
Double scale
Find fourth proportional to 255.78, 353.24 and 168.70
Similar ratio
Find fourth proportional to 382.16, 527.78 and 251.55
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.