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Finding the Fourth Proportional to 1,299.45, 1,795.14 and 1,124.49

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Solution

The fourth proportional to 1,299.45, 1,795.14 and 1,124.49 is: 1,553.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.45 : 1,795.14 = 1,124.49 : x
  2. Step 2: Convert to fraction form
    1,299.45/1,795.14 = 1,124.49/x
  3. Step 3: Cross multiply
    1,299.45x = 1,795.14 × 1,124.49
  4. Step 4: Simplify right side
    1,299.45x = 2,018,616.98
  5. Step 5: Solve for x
    x = 2,018,616.98/1,299.45
  6. Step 6: Final answer
    x = 1,553.44

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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.