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Finding the Fourth Proportional to 798.60, 1,197.84 and 359.83

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Solution

The fourth proportional to 798.60, 1,197.84 and 359.83 is: 539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.60 : 1,197.84 = 359.83 : x
  2. Step 2: Convert to fraction form
    798.60/1,197.84 = 359.83/x
  3. Step 3: Cross multiply
    798.60x = 1,197.84 × 359.83
  4. Step 4: Simplify right side
    798.60x = 431,017.91
  5. Step 5: Solve for x
    x = 431,017.91/798.60
  6. Step 6: Final answer
    x = 539.72

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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.