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Finding the Fourth Proportional to 1,183.87, 1,776.61 and 607.15

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Solution

The fourth proportional to 1,183.87, 1,776.61 and 607.15 is: 911.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.87 : 1,776.61 = 607.15 : x
  2. Step 2: Convert to fraction form
    1,183.87/1,776.61 = 607.15/x
  3. Step 3: Cross multiply
    1,183.87x = 1,776.61 × 607.15
  4. Step 4: Simplify right side
    1,183.87x = 1,078,658.36
  5. Step 5: Solve for x
    x = 1,078,658.36/1,183.87
  6. Step 6: Final answer
    x = 911.13

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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.