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Finding the Fourth Proportional to 794.18, 1,191.29 and 274.20

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Solution

The fourth proportional to 794.18, 1,191.29 and 274.20 is: 411.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.18 : 1,191.29 = 274.20 : x
  2. Step 2: Convert to fraction form
    794.18/1,191.29 = 274.20/x
  3. Step 3: Cross multiply
    794.18x = 1,191.29 × 274.20
  4. Step 4: Simplify right side
    794.18x = 326,650.35
  5. Step 5: Solve for x
    x = 326,650.35/794.18
  6. Step 6: Final answer
    x = 411.31

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Double scale
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1.5x scale

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.