Home / 876.72-1,315.08-534

Finding the Fourth Proportional to 876.72, 1,315.08 and 534

Calculator

Solution

The fourth proportional to 876.72, 1,315.08 and 534 is: 801

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.72 : 1,315.08 = 534 : x
  2. Step 2: Convert to fraction form
    876.72/1,315.08 = 534/x
  3. Step 3: Cross multiply
    876.72x = 1,315.08 × 534
  4. Step 4: Simplify right side
    876.72x = 702,252.72
  5. Step 5: Solve for x
    x = 702,252.72/876.72
  6. Step 6: Final answer
    x = 801

Related Problems

Find fourth proportional to 438.36, 657.54 and 267
Half scale
Find fourth proportional to 1,753.44, 2,630.16 and 1,068
Double scale
Find fourth proportional to 877.72, 1,316.58 and 535
Similar ratio
Find fourth proportional to 1,315.08, 1,972.62 and 801
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.