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Finding the Fourth Proportional to 1,230.67, 1,846 and 460.63

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Solution

The fourth proportional to 1,230.67, 1,846 and 460.63 is: 690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.67 : 1,846 = 460.63 : x
  2. Step 2: Convert to fraction form
    1,230.67/1,846 = 460.63/x
  3. Step 3: Cross multiply
    1,230.67x = 1,846 × 460.63
  4. Step 4: Simplify right side
    1,230.67x = 850,313.75
  5. Step 5: Solve for x
    x = 850,313.75/1,230.67
  6. Step 6: Final answer
    x = 690.94

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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.