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Finding the Fourth Proportional to 1,012.36, 1,519.02 and 499.08

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Solution

The fourth proportional to 1,012.36, 1,519.02 and 499.08 is: 748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012.36 : 1,519.02 = 499.08 : x
  2. Step 2: Convert to fraction form
    1,012.36/1,519.02 = 499.08/x
  3. Step 3: Cross multiply
    1,012.36x = 1,519.02 × 499.08
  4. Step 4: Simplify right side
    1,012.36x = 758,112.50
  5. Step 5: Solve for x
    x = 758,112.50/1,012.36
  6. Step 6: Final answer
    x = 748.86

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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.