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Finding the Fourth Proportional to 794.98, 1,097.21 and 445.68

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Solution

The fourth proportional to 794.98, 1,097.21 and 445.68 is: 615.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.98 : 1,097.21 = 445.68 : x
  2. Step 2: Convert to fraction form
    794.98/1,097.21 = 445.68/x
  3. Step 3: Cross multiply
    794.98x = 1,097.21 × 445.68
  4. Step 4: Simplify right side
    794.98x = 489,004.55
  5. Step 5: Solve for x
    x = 489,004.55/794.98
  6. Step 6: Final answer
    x = 615.12

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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.