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Finding the Fourth Proportional to 1,184.39, 1,773.43 and 979.87

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Solution

The fourth proportional to 1,184.39, 1,773.43 and 979.87 is: 1,467.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.39 : 1,773.43 = 979.87 : x
  2. Step 2: Convert to fraction form
    1,184.39/1,773.43 = 979.87/x
  3. Step 3: Cross multiply
    1,184.39x = 1,773.43 × 979.87
  4. Step 4: Simplify right side
    1,184.39x = 1,737,730.85
  5. Step 5: Solve for x
    x = 1,737,730.85/1,184.39
  6. Step 6: Final answer
    x = 1,467.19

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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.