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Finding the Fourth Proportional to 146.92, 220.34 and 55.58

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Solution

The fourth proportional to 146.92, 220.34 and 55.58 is: 83.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.92 : 220.34 = 55.58 : x
  2. Step 2: Convert to fraction form
    146.92/220.34 = 55.58/x
  3. Step 3: Cross multiply
    146.92x = 220.34 × 55.58
  4. Step 4: Simplify right side
    146.92x = 12,245.94
  5. Step 5: Solve for x
    x = 12,245.94/146.92
  6. Step 6: Final answer
    x = 83.35

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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.