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Finding the Fourth Proportional to 794.91, 1,192.29 and 274.95

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Solution

The fourth proportional to 794.91, 1,192.29 and 274.95 is: 412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.91 : 1,192.29 = 274.95 : x
  2. Step 2: Convert to fraction form
    794.91/1,192.29 = 274.95/x
  3. Step 3: Cross multiply
    794.91x = 1,192.29 × 274.95
  4. Step 4: Simplify right side
    794.91x = 327,820.14
  5. Step 5: Solve for x
    x = 327,820.14/794.91
  6. Step 6: Final answer
    x = 412.40

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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.