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Finding the Fourth Proportional to 554.52, 834.85 and 489.89

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Solution

The fourth proportional to 554.52, 834.85 and 489.89 is: 737.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.52 : 834.85 = 489.89 : x
  2. Step 2: Convert to fraction form
    554.52/834.85 = 489.89/x
  3. Step 3: Cross multiply
    554.52x = 834.85 × 489.89
  4. Step 4: Simplify right side
    554.52x = 408,979.27
  5. Step 5: Solve for x
    x = 408,979.27/554.52
  6. Step 6: Final answer
    x = 737.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.