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Finding the Fourth Proportional to 548.38, 822.73 and 305.08

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Solution

The fourth proportional to 548.38, 822.73 and 305.08 is: 457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.38 : 822.73 = 305.08 : x
  2. Step 2: Convert to fraction form
    548.38/822.73 = 305.08/x
  3. Step 3: Cross multiply
    548.38x = 822.73 × 305.08
  4. Step 4: Simplify right side
    548.38x = 250,997.19
  5. Step 5: Solve for x
    x = 250,997.19/548.38
  6. Step 6: Final answer
    x = 457.70

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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.