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Finding the Fourth Proportional to 797.69, 1,196.62 and 277.79

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Solution

The fourth proportional to 797.69, 1,196.62 and 277.79 is: 416.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.69 : 1,196.62 = 277.79 : x
  2. Step 2: Convert to fraction form
    797.69/1,196.62 = 277.79/x
  3. Step 3: Cross multiply
    797.69x = 1,196.62 × 277.79
  4. Step 4: Simplify right side
    797.69x = 332,402.39
  5. Step 5: Solve for x
    x = 332,402.39/797.69
  6. Step 6: Final answer
    x = 416.70

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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.