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Finding the Fourth Proportional to 1,183.65, 1,774.40 and 605.85

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Solution

The fourth proportional to 1,183.65, 1,774.40 and 605.85 is: 908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.65 : 1,774.40 = 605.85 : x
  2. Step 2: Convert to fraction form
    1,183.65/1,774.40 = 605.85/x
  3. Step 3: Cross multiply
    1,183.65x = 1,774.40 × 605.85
  4. Step 4: Simplify right side
    1,183.65x = 1,075,017.21
  5. Step 5: Solve for x
    x = 1,075,017.21/1,183.65
  6. Step 6: Final answer
    x = 908.22

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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.