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Finding the Fourth Proportional to 59.54, 89.31 and 18.96

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Solution

The fourth proportional to 59.54, 89.31 and 18.96 is: 28.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.54 : 89.31 = 18.96 : x
  2. Step 2: Convert to fraction form
    59.54/89.31 = 18.96/x
  3. Step 3: Cross multiply
    59.54x = 89.31 × 18.96
  4. Step 4: Simplify right side
    59.54x = 1,693.25
  5. Step 5: Solve for x
    x = 1,693.25/59.54
  6. Step 6: Final answer
    x = 28.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.