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Finding the Fourth Proportional to 798.32, 1,101.67 and 449

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Solution

The fourth proportional to 798.32, 1,101.67 and 449 is: 619.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.32 : 1,101.67 = 449 : x
  2. Step 2: Convert to fraction form
    798.32/1,101.67 = 449/x
  3. Step 3: Cross multiply
    798.32x = 1,101.67 × 449
  4. Step 4: Simplify right side
    798.32x = 494,649.83
  5. Step 5: Solve for x
    x = 494,649.83/798.32
  6. Step 6: Final answer
    x = 619.61

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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.