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Finding the Fourth Proportional to 54.46, 74.76 and 53.44

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Solution

The fourth proportional to 54.46, 74.76 and 53.44 is: 73.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.46 : 74.76 = 53.44 : x
  2. Step 2: Convert to fraction form
    54.46/74.76 = 53.44/x
  3. Step 3: Cross multiply
    54.46x = 74.76 × 53.44
  4. Step 4: Simplify right side
    54.46x = 3,995.17
  5. Step 5: Solve for x
    x = 3,995.17/54.46
  6. Step 6: Final answer
    x = 73.36

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.