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Finding the Fourth Proportional to 548.40, 822.56 and 183.20

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Solution

The fourth proportional to 548.40, 822.56 and 183.20 is: 274.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.40 : 822.56 = 183.20 : x
  2. Step 2: Convert to fraction form
    548.40/822.56 = 183.20/x
  3. Step 3: Cross multiply
    548.40x = 822.56 × 183.20
  4. Step 4: Simplify right side
    548.40x = 150,692.99
  5. Step 5: Solve for x
    x = 150,692.99/548.40
  6. Step 6: Final answer
    x = 274.79

Related Problems

Find fourth proportional to 274.20, 411.28 and 91.60
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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.