Home / 568-782.88-509.92

Finding the Fourth Proportional to 568, 782.88 and 509.92

Calculator

Solution

The fourth proportional to 568, 782.88 and 509.92 is: 702.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    568 : 782.88 = 509.92 : x
  2. Step 2: Convert to fraction form
    568/782.88 = 509.92/x
  3. Step 3: Cross multiply
    568x = 782.88 × 509.92
  4. Step 4: Simplify right side
    568x = 399,206.17
  5. Step 5: Solve for x
    x = 399,206.17/568
  6. Step 6: Final answer
    x = 702.83

Related Problems

Find fourth proportional to 284, 391.44 and 254.96
Half scale
Find fourth proportional to 1,136, 1,565.76 and 1,019.84
Double scale
Find fourth proportional to 569, 784.26 and 510.92
Similar ratio
Find fourth proportional to 852, 1,174.32 and 764.88
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.