Home / 915.96-1,264-501.96

Finding the Fourth Proportional to 915.96, 1,264 and 501.96

Calculator

Solution

The fourth proportional to 915.96, 1,264 and 501.96 is: 692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    915.96 : 1,264 = 501.96 : x
  2. Step 2: Convert to fraction form
    915.96/1,264 = 501.96/x
  3. Step 3: Cross multiply
    915.96x = 1,264 × 501.96
  4. Step 4: Simplify right side
    915.96x = 634,477.44
  5. Step 5: Solve for x
    x = 634,477.44/915.96
  6. Step 6: Final answer
    x = 692.69

Related Problems

Find fourth proportional to 457.98, 632 and 250.98
Half scale
Find fourth proportional to 1,831.92, 2,528 and 1,003.92
Double scale
Find fourth proportional to 916.96, 1,265.38 and 502.96
Similar ratio
Find fourth proportional to 1,373.94, 1,896 and 752.94
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.