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Finding the Fourth Proportional to 2,005.79, 3,008.68 and 773.17

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Solution

The fourth proportional to 2,005.79, 3,008.68 and 773.17 is: 1,159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.79 : 3,008.68 = 773.17 : x
  2. Step 2: Convert to fraction form
    2,005.79/3,008.68 = 773.17/x
  3. Step 3: Cross multiply
    2,005.79x = 3,008.68 × 773.17
  4. Step 4: Simplify right side
    2,005.79x = 2,326,211.66
  5. Step 5: Solve for x
    x = 2,326,211.66/2,005.79
  6. Step 6: Final answer
    x = 1,159.75

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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.