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Finding the Fourth Proportional to 404.79, 606.78 and 173.83

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Solution

The fourth proportional to 404.79, 606.78 and 173.83 is: 260.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.79 : 606.78 = 173.83 : x
  2. Step 2: Convert to fraction form
    404.79/606.78 = 173.83/x
  3. Step 3: Cross multiply
    404.79x = 606.78 × 173.83
  4. Step 4: Simplify right side
    404.79x = 105,476.57
  5. Step 5: Solve for x
    x = 105,476.57/404.79
  6. Step 6: Final answer
    x = 260.57

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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.