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Finding the Fourth Proportional to 1,447.84, 1,996.14 and 922.96

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Solution

The fourth proportional to 1,447.84, 1,996.14 and 922.96 is: 1,272.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.84 : 1,996.14 = 922.96 : x
  2. Step 2: Convert to fraction form
    1,447.84/1,996.14 = 922.96/x
  3. Step 3: Cross multiply
    1,447.84x = 1,996.14 × 922.96
  4. Step 4: Simplify right side
    1,447.84x = 1,842,357.37
  5. Step 5: Solve for x
    x = 1,842,357.37/1,447.84
  6. Step 6: Final answer
    x = 1,272.49

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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.