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Finding the Fourth Proportional to 270.07, 404.12 and 187.40

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Solution

The fourth proportional to 270.07, 404.12 and 187.40 is: 280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.07 : 404.12 = 187.40 : x
  2. Step 2: Convert to fraction form
    270.07/404.12 = 187.40/x
  3. Step 3: Cross multiply
    270.07x = 404.12 × 187.40
  4. Step 4: Simplify right side
    270.07x = 75,732.09
  5. Step 5: Solve for x
    x = 75,732.09/270.07
  6. Step 6: Final answer
    x = 280.42

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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.