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Finding the Fourth Proportional to 1,318.84, 1,819.68 and 794.77

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Solution

The fourth proportional to 1,318.84, 1,819.68 and 794.77 is: 1,096.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.84 : 1,819.68 = 794.77 : x
  2. Step 2: Convert to fraction form
    1,318.84/1,819.68 = 794.77/x
  3. Step 3: Cross multiply
    1,318.84x = 1,819.68 × 794.77
  4. Step 4: Simplify right side
    1,318.84x = 1,446,227.07
  5. Step 5: Solve for x
    x = 1,446,227.07/1,318.84
  6. Step 6: Final answer
    x = 1,096.59

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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.