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Finding the Fourth Proportional to 1,192.93, 1,789.64 and 846.39

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Solution

The fourth proportional to 1,192.93, 1,789.64 and 846.39 is: 1,269.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.93 : 1,789.64 = 846.39 : x
  2. Step 2: Convert to fraction form
    1,192.93/1,789.64 = 846.39/x
  3. Step 3: Cross multiply
    1,192.93x = 1,789.64 × 846.39
  4. Step 4: Simplify right side
    1,192.93x = 1,514,733.40
  5. Step 5: Solve for x
    x = 1,514,733.40/1,192.93
  6. Step 6: Final answer
    x = 1,269.76

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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.