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Finding the Fourth Proportional to 404.35, 603.59 and 355.75

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Solution

The fourth proportional to 404.35, 603.59 and 355.75 is: 531.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.35 : 603.59 = 355.75 : x
  2. Step 2: Convert to fraction form
    404.35/603.59 = 355.75/x
  3. Step 3: Cross multiply
    404.35x = 603.59 × 355.75
  4. Step 4: Simplify right side
    404.35x = 214,727.14
  5. Step 5: Solve for x
    x = 214,727.14/404.35
  6. Step 6: Final answer
    x = 531.04

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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.