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Finding the Fourth Proportional to 548.20, 822.30 and 182.90

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Solution

The fourth proportional to 548.20, 822.30 and 182.90 is: 274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.20 : 822.30 = 182.90 : x
  2. Step 2: Convert to fraction form
    548.20/822.30 = 182.90/x
  3. Step 3: Cross multiply
    548.20x = 822.30 × 182.90
  4. Step 4: Simplify right side
    548.20x = 150,398.67
  5. Step 5: Solve for x
    x = 150,398.67/548.20
  6. Step 6: Final answer
    x = 274.35

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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.