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Finding the Fourth Proportional to 59.43, 82.11 and 47.25

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Solution

The fourth proportional to 59.43, 82.11 and 47.25 is: 65.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.43 : 82.11 = 47.25 : x
  2. Step 2: Convert to fraction form
    59.43/82.11 = 47.25/x
  3. Step 3: Cross multiply
    59.43x = 82.11 × 47.25
  4. Step 4: Simplify right side
    59.43x = 3,879.70
  5. Step 5: Solve for x
    x = 3,879.70/59.43
  6. Step 6: Final answer
    x = 65.28

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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.