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Finding the Fourth Proportional to 554.11, 762.38 and 540.44

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Solution

The fourth proportional to 554.11, 762.38 and 540.44 is: 743.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.11 : 762.38 = 540.44 : x
  2. Step 2: Convert to fraction form
    554.11/762.38 = 540.44/x
  3. Step 3: Cross multiply
    554.11x = 762.38 × 540.44
  4. Step 4: Simplify right side
    554.11x = 412,018.19
  5. Step 5: Solve for x
    x = 412,018.19/554.11
  6. Step 6: Final answer
    x = 743.57

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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.