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Finding the Fourth Proportional to 589.71, 814.02 and 554.78

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Solution

The fourth proportional to 589.71, 814.02 and 554.78 is: 765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.71 : 814.02 = 554.78 : x
  2. Step 2: Convert to fraction form
    589.71/814.02 = 554.78/x
  3. Step 3: Cross multiply
    589.71x = 814.02 × 554.78
  4. Step 4: Simplify right side
    589.71x = 451,601.97
  5. Step 5: Solve for x
    x = 451,601.97/589.71
  6. Step 6: Final answer
    x = 765.80

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Why These Related Problems?

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