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Finding the Fourth Proportional to 54.56, 74.98 and 43.63

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Solution

The fourth proportional to 54.56, 74.98 and 43.63 is: 59.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.56 : 74.98 = 43.63 : x
  2. Step 2: Convert to fraction form
    54.56/74.98 = 43.63/x
  3. Step 3: Cross multiply
    54.56x = 74.98 × 43.63
  4. Step 4: Simplify right side
    54.56x = 3,271.30
  5. Step 5: Solve for x
    x = 3,271.30/54.56
  6. Step 6: Final answer
    x = 59.95

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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.