Home / 475.52-656-278.96

Finding the Fourth Proportional to 475.52, 656 and 278.96

Calculator

Solution

The fourth proportional to 475.52, 656 and 278.96 is: 384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.52 : 656 = 278.96 : x
  2. Step 2: Convert to fraction form
    475.52/656 = 278.96/x
  3. Step 3: Cross multiply
    475.52x = 656 × 278.96
  4. Step 4: Simplify right side
    475.52x = 182,997.76
  5. Step 5: Solve for x
    x = 182,997.76/475.52
  6. Step 6: Final answer
    x = 384.84

Related Problems

Find fourth proportional to 237.76, 328 and 139.48
Half scale
Find fourth proportional to 951.04, 1,312 and 557.92
Double scale
Find fourth proportional to 476.52, 657.38 and 279.96
Similar ratio
Find fourth proportional to 713.28, 984 and 418.44
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.