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Finding the Fourth Proportional to 1,196.65, 1,794.92 and 493.78

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Solution

The fourth proportional to 1,196.65, 1,794.92 and 493.78 is: 740.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.65 : 1,794.92 = 493.78 : x
  2. Step 2: Convert to fraction form
    1,196.65/1,794.92 = 493.78/x
  3. Step 3: Cross multiply
    1,196.65x = 1,794.92 × 493.78
  4. Step 4: Simplify right side
    1,196.65x = 886,284.15
  5. Step 5: Solve for x
    x = 886,284.15/1,196.65
  6. Step 6: Final answer
    x = 740.64

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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.