Home / 1,264.28-1,896.20-339.92

Finding the Fourth Proportional to 1,264.28, 1,896.20 and 339.92

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Solution

The fourth proportional to 1,264.28, 1,896.20 and 339.92 is: 509.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.28 : 1,896.20 = 339.92 : x
  2. Step 2: Convert to fraction form
    1,264.28/1,896.20 = 339.92/x
  3. Step 3: Cross multiply
    1,264.28x = 1,896.20 × 339.92
  4. Step 4: Simplify right side
    1,264.28x = 644,556.30
  5. Step 5: Solve for x
    x = 644,556.30/1,264.28
  6. Step 6: Final answer
    x = 509.82

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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.