Home / 534.78-738-313.92

Finding the Fourth Proportional to 534.78, 738 and 313.92

Calculator

Solution

The fourth proportional to 534.78, 738 and 313.92 is: 433.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.78 : 738 = 313.92 : x
  2. Step 2: Convert to fraction form
    534.78/738 = 313.92/x
  3. Step 3: Cross multiply
    534.78x = 738 × 313.92
  4. Step 4: Simplify right side
    534.78x = 231,672.96
  5. Step 5: Solve for x
    x = 231,672.96/534.78
  6. Step 6: Final answer
    x = 433.21

Related Problems

Find fourth proportional to 267.39, 369 and 156.96
Half scale
Find fourth proportional to 1,069.56, 1,476 and 627.84
Double scale
Find fourth proportional to 535.78, 739.38 and 314.92
Similar ratio
Find fourth proportional to 802.17, 1,107 and 470.88
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.