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Finding the Fourth Proportional to 164.86, 247.33 and 68.64

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Solution

The fourth proportional to 164.86, 247.33 and 68.64 is: 102.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.86 : 247.33 = 68.64 : x
  2. Step 2: Convert to fraction form
    164.86/247.33 = 68.64/x
  3. Step 3: Cross multiply
    164.86x = 247.33 × 68.64
  4. Step 4: Simplify right side
    164.86x = 16,976.73
  5. Step 5: Solve for x
    x = 16,976.73/164.86
  6. Step 6: Final answer
    x = 102.98

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