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Finding the Fourth Proportional to 549.37, 822.79 and 274.58

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Solution

The fourth proportional to 549.37, 822.79 and 274.58 is: 411.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.37 : 822.79 = 274.58 : x
  2. Step 2: Convert to fraction form
    549.37/822.79 = 274.58/x
  3. Step 3: Cross multiply
    549.37x = 822.79 × 274.58
  4. Step 4: Simplify right side
    549.37x = 225,921.68
  5. Step 5: Solve for x
    x = 225,921.68/549.37
  6. Step 6: Final answer
    x = 411.24

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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.