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Finding the Fourth Proportional to 404.75, 607.19 and 265.97

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Solution

The fourth proportional to 404.75, 607.19 and 265.97 is: 398.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.75 : 607.19 = 265.97 : x
  2. Step 2: Convert to fraction form
    404.75/607.19 = 265.97/x
  3. Step 3: Cross multiply
    404.75x = 607.19 × 265.97
  4. Step 4: Simplify right side
    404.75x = 161,489.96
  5. Step 5: Solve for x
    x = 161,489.96/404.75
  6. Step 6: Final answer
    x = 398.99

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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.