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Finding the Fourth Proportional to 1,601.96, 2,402.38 and 779.71

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Solution

The fourth proportional to 1,601.96, 2,402.38 and 779.71 is: 1,169.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.96 : 2,402.38 = 779.71 : x
  2. Step 2: Convert to fraction form
    1,601.96/2,402.38 = 779.71/x
  3. Step 3: Cross multiply
    1,601.96x = 2,402.38 × 779.71
  4. Step 4: Simplify right side
    1,601.96x = 1,873,159.71
  5. Step 5: Solve for x
    x = 1,873,159.71/1,601.96
  6. Step 6: Final answer
    x = 1,169.29

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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.