Home / 633.01-874.69-493.49

Finding the Fourth Proportional to 633.01, 874.69 and 493.49

Calculator

Solution

The fourth proportional to 633.01, 874.69 and 493.49 is: 681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.01 : 874.69 = 493.49 : x
  2. Step 2: Convert to fraction form
    633.01/874.69 = 493.49/x
  3. Step 3: Cross multiply
    633.01x = 874.69 × 493.49
  4. Step 4: Simplify right side
    633.01x = 431,650.77
  5. Step 5: Solve for x
    x = 431,650.77/633.01
  6. Step 6: Final answer
    x = 681.90

Related Problems

Find fourth proportional to 316.51, 437.35 and 246.75
Half scale
Find fourth proportional to 1,266.02, 1,749.38 and 986.98
Double scale
Find fourth proportional to 634.01, 876.07 and 494.49
Similar ratio
Find fourth proportional to 949.52, 1,312.04 and 740.24
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.