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Finding the Fourth Proportional to 892.69, 1,340.06 and 584.89

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Solution

The fourth proportional to 892.69, 1,340.06 and 584.89 is: 878.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.69 : 1,340.06 = 584.89 : x
  2. Step 2: Convert to fraction form
    892.69/1,340.06 = 584.89/x
  3. Step 3: Cross multiply
    892.69x = 1,340.06 × 584.89
  4. Step 4: Simplify right side
    892.69x = 783,787.69
  5. Step 5: Solve for x
    x = 783,787.69/892.69
  6. Step 6: Final answer
    x = 878.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.