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Finding the Fourth Proportional to 574.74, 858.02 and 554.49

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Solution

The fourth proportional to 574.74, 858.02 and 554.49 is: 827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.74 : 858.02 = 554.49 : x
  2. Step 2: Convert to fraction form
    574.74/858.02 = 554.49/x
  3. Step 3: Cross multiply
    574.74x = 858.02 × 554.49
  4. Step 4: Simplify right side
    574.74x = 475,760.74
  5. Step 5: Solve for x
    x = 475,760.74/574.74
  6. Step 6: Final answer
    x = 827.78

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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.