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Finding the Fourth Proportional to 243.54, 365.40 and 106.56

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Solution

The fourth proportional to 243.54, 365.40 and 106.56 is: 159.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.54 : 365.40 = 106.56 : x
  2. Step 2: Convert to fraction form
    243.54/365.40 = 106.56/x
  3. Step 3: Cross multiply
    243.54x = 365.40 × 106.56
  4. Step 4: Simplify right side
    243.54x = 38,937.02
  5. Step 5: Solve for x
    x = 38,937.02/243.54
  6. Step 6: Final answer
    x = 159.88

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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.