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Finding the Fourth Proportional to 548.39, 822.51 and 223.69

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Solution

The fourth proportional to 548.39, 822.51 and 223.69 is: 335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.39 : 822.51 = 223.69 : x
  2. Step 2: Convert to fraction form
    548.39/822.51 = 223.69/x
  3. Step 3: Cross multiply
    548.39x = 822.51 × 223.69
  4. Step 4: Simplify right side
    548.39x = 183,983.15
  5. Step 5: Solve for x
    x = 183,983.15/548.39
  6. Step 6: Final answer
    x = 335.50

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.