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Finding the Fourth Proportional to 365.65, 547.91 and 243.47

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Solution

The fourth proportional to 365.65, 547.91 and 243.47 is: 364.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.65 : 547.91 = 243.47 : x
  2. Step 2: Convert to fraction form
    365.65/547.91 = 243.47/x
  3. Step 3: Cross multiply
    365.65x = 547.91 × 243.47
  4. Step 4: Simplify right side
    365.65x = 133,399.65
  5. Step 5: Solve for x
    x = 133,399.65/365.65
  6. Step 6: Final answer
    x = 364.83

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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.