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Finding the Fourth Proportional to 579.19, 863.39 and 554.89

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Solution

The fourth proportional to 579.19, 863.39 and 554.89 is: 827.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.19 : 863.39 = 554.89 : x
  2. Step 2: Convert to fraction form
    579.19/863.39 = 554.89/x
  3. Step 3: Cross multiply
    579.19x = 863.39 × 554.89
  4. Step 4: Simplify right side
    579.19x = 479,086.48
  5. Step 5: Solve for x
    x = 479,086.48/579.19
  6. Step 6: Final answer
    x = 827.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.