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Finding the Fourth Proportional to 796.82, 1,097.76 and 630.98

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Solution

The fourth proportional to 796.82, 1,097.76 and 630.98 is: 869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.82 : 1,097.76 = 630.98 : x
  2. Step 2: Convert to fraction form
    796.82/1,097.76 = 630.98/x
  3. Step 3: Cross multiply
    796.82x = 1,097.76 × 630.98
  4. Step 4: Simplify right side
    796.82x = 692,664.60
  5. Step 5: Solve for x
    x = 692,664.60/796.82
  6. Step 6: Final answer
    x = 869.29

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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.