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Finding the Fourth Proportional to 38.07, 56.97 and 28.98

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Solution

The fourth proportional to 38.07, 56.97 and 28.98 is: 43.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.07 : 56.97 = 28.98 : x
  2. Step 2: Convert to fraction form
    38.07/56.97 = 28.98/x
  3. Step 3: Cross multiply
    38.07x = 56.97 × 28.98
  4. Step 4: Simplify right side
    38.07x = 1,650.99
  5. Step 5: Solve for x
    x = 1,650.99/38.07
  6. Step 6: Final answer
    x = 43.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.