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Finding the Fourth Proportional to 797.58, 1,195.56 and 386.46

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Solution

The fourth proportional to 797.58, 1,195.56 and 386.46 is: 579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.58 : 1,195.56 = 386.46 : x
  2. Step 2: Convert to fraction form
    797.58/1,195.56 = 386.46/x
  3. Step 3: Cross multiply
    797.58x = 1,195.56 × 386.46
  4. Step 4: Simplify right side
    797.58x = 462,036.12
  5. Step 5: Solve for x
    x = 462,036.12/797.58
  6. Step 6: Final answer
    x = 579.30

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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.