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Finding the Fourth Proportional to 795.78, 1,186.83 and 680.94

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Solution

The fourth proportional to 795.78, 1,186.83 and 680.94 is: 1,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.78 : 1,186.83 = 680.94 : x
  2. Step 2: Convert to fraction form
    795.78/1,186.83 = 680.94/x
  3. Step 3: Cross multiply
    795.78x = 1,186.83 × 680.94
  4. Step 4: Simplify right side
    795.78x = 808,160.02
  5. Step 5: Solve for x
    x = 808,160.02/795.78
  6. Step 6: Final answer
    x = 1,015.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.