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Finding the Fourth Proportional to 817.39, 1,124.71 and 797.95

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Solution

The fourth proportional to 817.39, 1,124.71 and 797.95 is: 1,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.39 : 1,124.71 = 797.95 : x
  2. Step 2: Convert to fraction form
    817.39/1,124.71 = 797.95/x
  3. Step 3: Cross multiply
    817.39x = 1,124.71 × 797.95
  4. Step 4: Simplify right side
    817.39x = 897,458.35
  5. Step 5: Solve for x
    x = 897,458.35/817.39
  6. Step 6: Final answer
    x = 1,097.96

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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.