Home / 270.17-372-203.88

Finding the Fourth Proportional to 270.17, 372 and 203.88

Calculator

Solution

The fourth proportional to 270.17, 372 and 203.88 is: 280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.17 : 372 = 203.88 : x
  2. Step 2: Convert to fraction form
    270.17/372 = 203.88/x
  3. Step 3: Cross multiply
    270.17x = 372 × 203.88
  4. Step 4: Simplify right side
    270.17x = 75,843.36
  5. Step 5: Solve for x
    x = 75,843.36/270.17
  6. Step 6: Final answer
    x = 280.72

Related Problems

Find fourth proportional to 135.09, 186 and 101.94
Half scale
Find fourth proportional to 540.34, 744 and 407.76
Double scale
Find fourth proportional to 271.17, 373.38 and 204.88
Similar ratio
Find fourth proportional to 405.26, 558 and 305.82
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.