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Finding the Fourth Proportional to 1,231.29, 1,846.89 and 887.49

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Solution

The fourth proportional to 1,231.29, 1,846.89 and 887.49 is: 1,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.29 : 1,846.89 = 887.49 : x
  2. Step 2: Convert to fraction form
    1,231.29/1,846.89 = 887.49/x
  3. Step 3: Cross multiply
    1,231.29x = 1,846.89 × 887.49
  4. Step 4: Simplify right side
    1,231.29x = 1,639,096.41
  5. Step 5: Solve for x
    x = 1,639,096.41/1,231.29
  6. Step 6: Final answer
    x = 1,331.20

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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.