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Finding the Fourth Proportional to 554.14, 834.28 and 489.51

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Solution

The fourth proportional to 554.14, 834.28 and 489.51 is: 736.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.14 : 834.28 = 489.51 : x
  2. Step 2: Convert to fraction form
    554.14/834.28 = 489.51/x
  3. Step 3: Cross multiply
    554.14x = 834.28 × 489.51
  4. Step 4: Simplify right side
    554.14x = 408,389.93
  5. Step 5: Solve for x
    x = 408,389.93/554.14
  6. Step 6: Final answer
    x = 736.98

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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.