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Finding the Fourth Proportional to 855.79, 1,180.92 and 482.83

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Solution

The fourth proportional to 855.79, 1,180.92 and 482.83 is: 666.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    855.79 : 1,180.92 = 482.83 : x
  2. Step 2: Convert to fraction form
    855.79/1,180.92 = 482.83/x
  3. Step 3: Cross multiply
    855.79x = 1,180.92 × 482.83
  4. Step 4: Simplify right side
    855.79x = 570,183.60
  5. Step 5: Solve for x
    x = 570,183.60/855.79
  6. Step 6: Final answer
    x = 666.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.