Home / 925-1,276.52-557

Finding the Fourth Proportional to 925, 1,276.52 and 557

Calculator

Solution

The fourth proportional to 925, 1,276.52 and 557 is: 768.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    925 : 1,276.52 = 557 : x
  2. Step 2: Convert to fraction form
    925/1,276.52 = 557/x
  3. Step 3: Cross multiply
    925x = 1,276.52 × 557
  4. Step 4: Simplify right side
    925x = 711,021.64
  5. Step 5: Solve for x
    x = 711,021.64/925
  6. Step 6: Final answer
    x = 768.67

Related Problems

Find fourth proportional to 462.50, 638.26 and 278.50
Half scale
Find fourth proportional to 1,850, 2,553.04 and 1,114
Double scale
Find fourth proportional to 926, 1,277.90 and 558
Similar ratio
Find fourth proportional to 1,387.50, 1,914.78 and 835.50
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.