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Finding the Fourth Proportional to 51.54, 77.25 and 36.24

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Solution

The fourth proportional to 51.54, 77.25 and 36.24 is: 54.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.54 : 77.25 = 36.24 : x
  2. Step 2: Convert to fraction form
    51.54/77.25 = 36.24/x
  3. Step 3: Cross multiply
    51.54x = 77.25 × 36.24
  4. Step 4: Simplify right side
    51.54x = 2,799.54
  5. Step 5: Solve for x
    x = 2,799.54/51.54
  6. Step 6: Final answer
    x = 54.32

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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.