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Finding the Fourth Proportional to 783.41, 1,176.93 and 676.49

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Solution

The fourth proportional to 783.41, 1,176.93 and 676.49 is: 1,016.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.41 : 1,176.93 = 676.49 : x
  2. Step 2: Convert to fraction form
    783.41/1,176.93 = 676.49/x
  3. Step 3: Cross multiply
    783.41x = 1,176.93 × 676.49
  4. Step 4: Simplify right side
    783.41x = 796,175.49
  5. Step 5: Solve for x
    x = 796,175.49/783.41
  6. Step 6: Final answer
    x = 1,016.30

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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.