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Finding the Fourth Proportional to 270.14, 404.60 and 261.02

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Solution

The fourth proportional to 270.14, 404.60 and 261.02 is: 390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.14 : 404.60 = 261.02 : x
  2. Step 2: Convert to fraction form
    270.14/404.60 = 261.02/x
  3. Step 3: Cross multiply
    270.14x = 404.60 × 261.02
  4. Step 4: Simplify right side
    270.14x = 105,608.40
  5. Step 5: Solve for x
    x = 105,608.40/270.14
  6. Step 6: Final answer
    x = 390.95

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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.