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Finding the Fourth Proportional to 57.98, 80.05 and 37.28

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Solution

The fourth proportional to 57.98, 80.05 and 37.28 is: 51.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.98 : 80.05 = 37.28 : x
  2. Step 2: Convert to fraction form
    57.98/80.05 = 37.28/x
  3. Step 3: Cross multiply
    57.98x = 80.05 × 37.28
  4. Step 4: Simplify right side
    57.98x = 2,984.26
  5. Step 5: Solve for x
    x = 2,984.26/57.98
  6. Step 6: Final answer
    x = 51.47

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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.