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Finding the Fourth Proportional to 58.49, 80.81 and 54.44

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Solution

The fourth proportional to 58.49, 80.81 and 54.44 is: 75.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.49 : 80.81 = 54.44 : x
  2. Step 2: Convert to fraction form
    58.49/80.81 = 54.44/x
  3. Step 3: Cross multiply
    58.49x = 80.81 × 54.44
  4. Step 4: Simplify right side
    58.49x = 4,399.02
  5. Step 5: Solve for x
    x = 4,399.02/58.49
  6. Step 6: Final answer
    x = 75.21

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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.