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Finding the Fourth Proportional to 1,183.39, 1,775.08 and 361.65

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Solution

The fourth proportional to 1,183.39, 1,775.08 and 361.65 is: 542.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.39 : 1,775.08 = 361.65 : x
  2. Step 2: Convert to fraction form
    1,183.39/1,775.08 = 361.65/x
  3. Step 3: Cross multiply
    1,183.39x = 1,775.08 × 361.65
  4. Step 4: Simplify right side
    1,183.39x = 641,966.96
  5. Step 5: Solve for x
    x = 641,966.96/1,183.39
  6. Step 6: Final answer
    x = 542.48

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Double scale
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1.5x scale

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.