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Finding the Fourth Proportional to 796.76, 1,195.55 and 328.58

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Solution

The fourth proportional to 796.76, 1,195.55 and 328.58 is: 493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.76 : 1,195.55 = 328.58 : x
  2. Step 2: Convert to fraction form
    796.76/1,195.55 = 328.58/x
  3. Step 3: Cross multiply
    796.76x = 1,195.55 × 328.58
  4. Step 4: Simplify right side
    796.76x = 392,836.89
  5. Step 5: Solve for x
    x = 392,836.89/796.76
  6. Step 6: Final answer
    x = 493.04

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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.