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Finding the Fourth Proportional to 270.63, 404.72 and 205.65

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Solution

The fourth proportional to 270.63, 404.72 and 205.65 is: 307.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.63 : 404.72 = 205.65 : x
  2. Step 2: Convert to fraction form
    270.63/404.72 = 205.65/x
  3. Step 3: Cross multiply
    270.63x = 404.72 × 205.65
  4. Step 4: Simplify right side
    270.63x = 83,229.64
  5. Step 5: Solve for x
    x = 83,229.64/270.63
  6. Step 6: Final answer
    x = 307.54

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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.