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Finding the Fourth Proportional to 243.82, 365.73 and 99.55

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Solution

The fourth proportional to 243.82, 365.73 and 99.55 is: 149.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.82 : 365.73 = 99.55 : x
  2. Step 2: Convert to fraction form
    243.82/365.73 = 99.55/x
  3. Step 3: Cross multiply
    243.82x = 365.73 × 99.55
  4. Step 4: Simplify right side
    243.82x = 36,408.42
  5. Step 5: Solve for x
    x = 36,408.42/243.82
  6. Step 6: Final answer
    x = 149.33

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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.