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Finding the Fourth Proportional to 1,183.38, 1,775.15 and 403.06

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Solution

The fourth proportional to 1,183.38, 1,775.15 and 403.06 is: 604.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.38 : 1,775.15 = 403.06 : x
  2. Step 2: Convert to fraction form
    1,183.38/1,775.15 = 403.06/x
  3. Step 3: Cross multiply
    1,183.38x = 1,775.15 × 403.06
  4. Step 4: Simplify right side
    1,183.38x = 715,490.35
  5. Step 5: Solve for x
    x = 715,490.35/1,183.38
  6. Step 6: Final answer
    x = 604.62

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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.