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Finding the Fourth Proportional to 247.65, 369.33 and 245.22

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Solution

The fourth proportional to 247.65, 369.33 and 245.22 is: 365.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.65 : 369.33 = 245.22 : x
  2. Step 2: Convert to fraction form
    247.65/369.33 = 245.22/x
  3. Step 3: Cross multiply
    247.65x = 369.33 × 245.22
  4. Step 4: Simplify right side
    247.65x = 90,567.10
  5. Step 5: Solve for x
    x = 90,567.10/247.65
  6. Step 6: Final answer
    x = 365.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.