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Finding the Fourth Proportional to 796.81, 1,194.30 and 358.40

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Solution

The fourth proportional to 796.81, 1,194.30 and 358.40 is: 537.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.81 : 1,194.30 = 358.40 : x
  2. Step 2: Convert to fraction form
    796.81/1,194.30 = 358.40/x
  3. Step 3: Cross multiply
    796.81x = 1,194.30 × 358.40
  4. Step 4: Simplify right side
    796.81x = 428,031.15
  5. Step 5: Solve for x
    x = 428,031.15/796.81
  6. Step 6: Final answer
    x = 537.18

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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.