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Finding the Fourth Proportional to 1,230.73, 1,845.55 and 460.69

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Solution

The fourth proportional to 1,230.73, 1,845.55 and 460.69 is: 690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.73 : 1,845.55 = 460.69 : x
  2. Step 2: Convert to fraction form
    1,230.73/1,845.55 = 460.69/x
  3. Step 3: Cross multiply
    1,230.73x = 1,845.55 × 460.69
  4. Step 4: Simplify right side
    1,230.73x = 850,222.39
  5. Step 5: Solve for x
    x = 850,222.39/1,230.73
  6. Step 6: Final answer
    x = 690.83

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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.