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Finding the Fourth Proportional to 1,231.89, 1,847.52 and 366

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Solution

The fourth proportional to 1,231.89, 1,847.52 and 366 is: 548.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.89 : 1,847.52 = 366 : x
  2. Step 2: Convert to fraction form
    1,231.89/1,847.52 = 366/x
  3. Step 3: Cross multiply
    1,231.89x = 1,847.52 × 366
  4. Step 4: Simplify right side
    1,231.89x = 676,192.32
  5. Step 5: Solve for x
    x = 676,192.32/1,231.89
  6. Step 6: Final answer
    x = 548.91

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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.