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Finding the Fourth Proportional to 270.02, 404.78 and 96.58

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Solution

The fourth proportional to 270.02, 404.78 and 96.58 is: 144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.02 : 404.78 = 96.58 : x
  2. Step 2: Convert to fraction form
    270.02/404.78 = 96.58/x
  3. Step 3: Cross multiply
    270.02x = 404.78 × 96.58
  4. Step 4: Simplify right side
    270.02x = 39,093.65
  5. Step 5: Solve for x
    x = 39,093.65/270.02
  6. Step 6: Final answer
    x = 144.78

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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.