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Finding the Fourth Proportional to 404.08, 605.49 and 230.53

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Solution

The fourth proportional to 404.08, 605.49 and 230.53 is: 345.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.08 : 605.49 = 230.53 : x
  2. Step 2: Convert to fraction form
    404.08/605.49 = 230.53/x
  3. Step 3: Cross multiply
    404.08x = 605.49 × 230.53
  4. Step 4: Simplify right side
    404.08x = 139,583.61
  5. Step 5: Solve for x
    x = 139,583.61/404.08
  6. Step 6: Final answer
    x = 345.44

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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.