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Finding the Fourth Proportional to 844.00, 1,164.61 and 489.86

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Solution

The fourth proportional to 844.00, 1,164.61 and 489.86 is: 675.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.00 : 1,164.61 = 489.86 : x
  2. Step 2: Convert to fraction form
    844.00/1,164.61 = 489.86/x
  3. Step 3: Cross multiply
    844.00x = 1,164.61 × 489.86
  4. Step 4: Simplify right side
    844.00x = 570,498.81
  5. Step 5: Solve for x
    x = 570,498.81/844.00
  6. Step 6: Final answer
    x = 675.95

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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.