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Finding the Fourth Proportional to 796.45, 1,195.15 and 386.01

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Solution

The fourth proportional to 796.45, 1,195.15 and 386.01 is: 579.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.45 : 1,195.15 = 386.01 : x
  2. Step 2: Convert to fraction form
    796.45/1,195.15 = 386.01/x
  3. Step 3: Cross multiply
    796.45x = 1,195.15 × 386.01
  4. Step 4: Simplify right side
    796.45x = 461,339.85
  5. Step 5: Solve for x
    x = 461,339.85/796.45
  6. Step 6: Final answer
    x = 579.25

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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.