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Finding the Fourth Proportional to 1,012.82, 1,519.24 and 328.82

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Solution

The fourth proportional to 1,012.82, 1,519.24 and 328.82 is: 493.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012.82 : 1,519.24 = 328.82 : x
  2. Step 2: Convert to fraction form
    1,012.82/1,519.24 = 328.82/x
  3. Step 3: Cross multiply
    1,012.82x = 1,519.24 × 328.82
  4. Step 4: Simplify right side
    1,012.82x = 499,556.50
  5. Step 5: Solve for x
    x = 499,556.50/1,012.82
  6. Step 6: Final answer
    x = 493.23

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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.