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Finding the Fourth Proportional to 1,183.16, 1,774.82 and 490.14

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Solution

The fourth proportional to 1,183.16, 1,774.82 and 490.14 is: 735.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.16 : 1,774.82 = 490.14 : x
  2. Step 2: Convert to fraction form
    1,183.16/1,774.82 = 490.14/x
  3. Step 3: Cross multiply
    1,183.16x = 1,774.82 × 490.14
  4. Step 4: Simplify right side
    1,183.16x = 869,911.50
  5. Step 5: Solve for x
    x = 869,911.50/1,183.16
  6. Step 6: Final answer
    x = 735.24

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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.