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Finding the Fourth Proportional to 794.76, 1,186.71 and 683.88

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Solution

The fourth proportional to 794.76, 1,186.71 and 683.88 is: 1,021.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.76 : 1,186.71 = 683.88 : x
  2. Step 2: Convert to fraction form
    794.76/1,186.71 = 683.88/x
  3. Step 3: Cross multiply
    794.76x = 1,186.71 × 683.88
  4. Step 4: Simplify right side
    794.76x = 811,567.23
  5. Step 5: Solve for x
    x = 811,567.23/794.76
  6. Step 6: Final answer
    x = 1,021.15

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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.