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Finding the Fourth Proportional to 822.24, 1,232.91 and 274.12

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Solution

The fourth proportional to 822.24, 1,232.91 and 274.12 is: 411.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.24 : 1,232.91 = 274.12 : x
  2. Step 2: Convert to fraction form
    822.24/1,232.91 = 274.12/x
  3. Step 3: Cross multiply
    822.24x = 1,232.91 × 274.12
  4. Step 4: Simplify right side
    822.24x = 337,962.21
  5. Step 5: Solve for x
    x = 337,962.21/822.24
  6. Step 6: Final answer
    x = 411.03

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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.