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Finding the Fourth Proportional to 1,403.29, 1,936.65 and 844.03

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Solution

The fourth proportional to 1,403.29, 1,936.65 and 844.03 is: 1,164.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.29 : 1,936.65 = 844.03 : x
  2. Step 2: Convert to fraction form
    1,403.29/1,936.65 = 844.03/x
  3. Step 3: Cross multiply
    1,403.29x = 1,936.65 × 844.03
  4. Step 4: Simplify right side
    1,403.29x = 1,634,590.70
  5. Step 5: Solve for x
    x = 1,634,590.70/1,403.29
  6. Step 6: Final answer
    x = 1,164.83

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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.