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Finding the Fourth Proportional to 404.38, 603.95 and 349.66

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Solution

The fourth proportional to 404.38, 603.95 and 349.66 is: 522.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.38 : 603.95 = 349.66 : x
  2. Step 2: Convert to fraction form
    404.38/603.95 = 349.66/x
  3. Step 3: Cross multiply
    404.38x = 603.95 × 349.66
  4. Step 4: Simplify right side
    404.38x = 211,177.16
  5. Step 5: Solve for x
    x = 211,177.16/404.38
  6. Step 6: Final answer
    x = 522.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.