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Finding the Fourth Proportional to 146.86, 220.23 and 55.52

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Solution

The fourth proportional to 146.86, 220.23 and 55.52 is: 83.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.86 : 220.23 = 55.52 : x
  2. Step 2: Convert to fraction form
    146.86/220.23 = 55.52/x
  3. Step 3: Cross multiply
    146.86x = 220.23 × 55.52
  4. Step 4: Simplify right side
    146.86x = 12,227.17
  5. Step 5: Solve for x
    x = 12,227.17/146.86
  6. Step 6: Final answer
    x = 83.26

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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.