Home / 504.20-695.72-307.78

Finding the Fourth Proportional to 504.20, 695.72 and 307.78

Calculator

Solution

The fourth proportional to 504.20, 695.72 and 307.78 is: 424.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.20 : 695.72 = 307.78 : x
  2. Step 2: Convert to fraction form
    504.20/695.72 = 307.78/x
  3. Step 3: Cross multiply
    504.20x = 695.72 × 307.78
  4. Step 4: Simplify right side
    504.20x = 214,128.70
  5. Step 5: Solve for x
    x = 214,128.70/504.20
  6. Step 6: Final answer
    x = 424.69

Related Problems

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.