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Finding the Fourth Proportional to 798.69, 1,102.20 and 444.65

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Solution

The fourth proportional to 798.69, 1,102.20 and 444.65 is: 613.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.69 : 1,102.20 = 444.65 : x
  2. Step 2: Convert to fraction form
    798.69/1,102.20 = 444.65/x
  3. Step 3: Cross multiply
    798.69x = 1,102.20 × 444.65
  4. Step 4: Simplify right side
    798.69x = 490,087.72
  5. Step 5: Solve for x
    x = 490,087.72/798.69
  6. Step 6: Final answer
    x = 613.61

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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.