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Finding the Fourth Proportional to 54.54, 81.30 and 52.35

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Solution

The fourth proportional to 54.54, 81.30 and 52.35 is: 78.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.54 : 81.30 = 52.35 : x
  2. Step 2: Convert to fraction form
    54.54/81.30 = 52.35/x
  3. Step 3: Cross multiply
    54.54x = 81.30 × 52.35
  4. Step 4: Simplify right side
    54.54x = 4,255.95
  5. Step 5: Solve for x
    x = 4,255.95/54.54
  6. Step 6: Final answer
    x = 78.03

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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.