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Finding the Fourth Proportional to 1,230.28, 1,845.69 and 581.02

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Solution

The fourth proportional to 1,230.28, 1,845.69 and 581.02 is: 871.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.28 : 1,845.69 = 581.02 : x
  2. Step 2: Convert to fraction form
    1,230.28/1,845.69 = 581.02/x
  3. Step 3: Cross multiply
    1,230.28x = 1,845.69 × 581.02
  4. Step 4: Simplify right side
    1,230.28x = 1,072,382.80
  5. Step 5: Solve for x
    x = 1,072,382.80/1,230.28
  6. Step 6: Final answer
    x = 871.66

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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.