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Finding the Fourth Proportional to 794.17, 1,191.30 and 274.24

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Solution

The fourth proportional to 794.17, 1,191.30 and 274.24 is: 411.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.17 : 1,191.30 = 274.24 : x
  2. Step 2: Convert to fraction form
    794.17/1,191.30 = 274.24/x
  3. Step 3: Cross multiply
    794.17x = 1,191.30 × 274.24
  4. Step 4: Simplify right side
    794.17x = 326,702.11
  5. Step 5: Solve for x
    x = 326,702.11/794.17
  6. Step 6: Final answer
    x = 411.38

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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.