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Finding the Fourth Proportional to 605.54, 908.42 and 345.83

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Solution

The fourth proportional to 605.54, 908.42 and 345.83 is: 518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.54 : 908.42 = 345.83 : x
  2. Step 2: Convert to fraction form
    605.54/908.42 = 345.83/x
  3. Step 3: Cross multiply
    605.54x = 908.42 × 345.83
  4. Step 4: Simplify right side
    605.54x = 314,156.02
  5. Step 5: Solve for x
    x = 314,156.02/605.54
  6. Step 6: Final answer
    x = 518.81

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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.