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Finding the Fourth Proportional to 45.73, 63.09 and 28.27

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Solution

The fourth proportional to 45.73, 63.09 and 28.27 is: 39.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.73 : 63.09 = 28.27 : x
  2. Step 2: Convert to fraction form
    45.73/63.09 = 28.27/x
  3. Step 3: Cross multiply
    45.73x = 63.09 × 28.27
  4. Step 4: Simplify right side
    45.73x = 1,783.55
  5. Step 5: Solve for x
    x = 1,783.55/45.73
  6. Step 6: Final answer
    x = 39.00

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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.