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Finding the Fourth Proportional to 80.21, 110.52 and 59.47

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Solution

The fourth proportional to 80.21, 110.52 and 59.47 is: 81.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.21 : 110.52 = 59.47 : x
  2. Step 2: Convert to fraction form
    80.21/110.52 = 59.47/x
  3. Step 3: Cross multiply
    80.21x = 110.52 × 59.47
  4. Step 4: Simplify right side
    80.21x = 6,572.35
  5. Step 5: Solve for x
    x = 6,572.35/80.21
  6. Step 6: Final answer
    x = 81.94

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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.