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Finding the Fourth Proportional to 548.36, 822.11 and 274.31

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Solution

The fourth proportional to 548.36, 822.11 and 274.31 is: 411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.36 : 822.11 = 274.31 : x
  2. Step 2: Convert to fraction form
    548.36/822.11 = 274.31/x
  3. Step 3: Cross multiply
    548.36x = 822.11 × 274.31
  4. Step 4: Simplify right side
    548.36x = 225,512.99
  5. Step 5: Solve for x
    x = 225,512.99/548.36
  6. Step 6: Final answer
    x = 411.25

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.