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Finding the Fourth Proportional to 243.65, 336.21 and 150.54

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Solution

The fourth proportional to 243.65, 336.21 and 150.54 is: 207.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.65 : 336.21 = 150.54 : x
  2. Step 2: Convert to fraction form
    243.65/336.21 = 150.54/x
  3. Step 3: Cross multiply
    243.65x = 336.21 × 150.54
  4. Step 4: Simplify right side
    243.65x = 50,613.05
  5. Step 5: Solve for x
    x = 50,613.05/243.65
  6. Step 6: Final answer
    x = 207.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.