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Finding the Fourth Proportional to 404.05, 603.52 and 322.66

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Solution

The fourth proportional to 404.05, 603.52 and 322.66 is: 481.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.05 : 603.52 = 322.66 : x
  2. Step 2: Convert to fraction form
    404.05/603.52 = 322.66/x
  3. Step 3: Cross multiply
    404.05x = 603.52 × 322.66
  4. Step 4: Simplify right side
    404.05x = 194,731.76
  5. Step 5: Solve for x
    x = 194,731.76/404.05
  6. Step 6: Final answer
    x = 481.95

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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.