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Finding the Fourth Proportional to 574.48, 855.87 and 554.91

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Solution

The fourth proportional to 574.48, 855.87 and 554.91 is: 826.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.48 : 855.87 = 554.91 : x
  2. Step 2: Convert to fraction form
    574.48/855.87 = 554.91/x
  3. Step 3: Cross multiply
    574.48x = 855.87 × 554.91
  4. Step 4: Simplify right side
    574.48x = 474,930.82
  5. Step 5: Solve for x
    x = 474,930.82/574.48
  6. Step 6: Final answer
    x = 826.71

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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.