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Finding the Fourth Proportional to 1,349.88, 1,864.53 and 996.45

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Solution

The fourth proportional to 1,349.88, 1,864.53 and 996.45 is: 1,376.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.88 : 1,864.53 = 996.45 : x
  2. Step 2: Convert to fraction form
    1,349.88/1,864.53 = 996.45/x
  3. Step 3: Cross multiply
    1,349.88x = 1,864.53 × 996.45
  4. Step 4: Simplify right side
    1,349.88x = 1,857,910.92
  5. Step 5: Solve for x
    x = 1,857,910.92/1,349.88
  6. Step 6: Final answer
    x = 1,376.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.