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Finding the Fourth Proportional to 1,183.68, 1,775.55 and 414.18

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Solution

The fourth proportional to 1,183.68, 1,775.55 and 414.18 is: 621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.68 : 1,775.55 = 414.18 : x
  2. Step 2: Convert to fraction form
    1,183.68/1,775.55 = 414.18/x
  3. Step 3: Cross multiply
    1,183.68x = 1,775.55 × 414.18
  4. Step 4: Simplify right side
    1,183.68x = 735,397.30
  5. Step 5: Solve for x
    x = 735,397.30/1,183.68
  6. Step 6: Final answer
    x = 621.28

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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.