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Finding the Fourth Proportional to 554.93, 764.93 and 379.97

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Solution

The fourth proportional to 554.93, 764.93 and 379.97 is: 523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.93 : 764.93 = 379.97 : x
  2. Step 2: Convert to fraction form
    554.93/764.93 = 379.97/x
  3. Step 3: Cross multiply
    554.93x = 764.93 × 379.97
  4. Step 4: Simplify right side
    554.93x = 290,647.58
  5. Step 5: Solve for x
    x = 290,647.58/554.93
  6. Step 6: Final answer
    x = 523.76

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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.