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Finding the Fourth Proportional to 243.93, 365.88 and 89.86

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Solution

The fourth proportional to 243.93, 365.88 and 89.86 is: 134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.93 : 365.88 = 89.86 : x
  2. Step 2: Convert to fraction form
    243.93/365.88 = 89.86/x
  3. Step 3: Cross multiply
    243.93x = 365.88 × 89.86
  4. Step 4: Simplify right side
    243.93x = 32,877.98
  5. Step 5: Solve for x
    x = 32,877.98/243.93
  6. Step 6: Final answer
    x = 134.78

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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.