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Finding the Fourth Proportional to 1,103.94, 1,656.06 and 519.54

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Solution

The fourth proportional to 1,103.94, 1,656.06 and 519.54 is: 779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.94 : 1,656.06 = 519.54 : x
  2. Step 2: Convert to fraction form
    1,103.94/1,656.06 = 519.54/x
  3. Step 3: Cross multiply
    1,103.94x = 1,656.06 × 519.54
  4. Step 4: Simplify right side
    1,103.94x = 860,389.41
  5. Step 5: Solve for x
    x = 860,389.41/1,103.94
  6. Step 6: Final answer
    x = 779.38

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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.