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Finding the Fourth Proportional to 844.07, 1,164.80 and 489.98

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Solution

The fourth proportional to 844.07, 1,164.80 and 489.98 is: 676.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.07 : 1,164.80 = 489.98 : x
  2. Step 2: Convert to fraction form
    844.07/1,164.80 = 489.98/x
  3. Step 3: Cross multiply
    844.07x = 1,164.80 × 489.98
  4. Step 4: Simplify right side
    844.07x = 570,720.43
  5. Step 5: Solve for x
    x = 570,720.43/844.07
  6. Step 6: Final answer
    x = 676.16

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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.