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Finding the Fourth Proportional to 548, 822.24 and 304.64

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Solution

The fourth proportional to 548, 822.24 and 304.64 is: 457.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    548 : 822.24 = 304.64 : x
  2. Step 2: Convert to fraction form
    548/822.24 = 304.64/x
  3. Step 3: Cross multiply
    548x = 822.24 × 304.64
  4. Step 4: Simplify right side
    548x = 250,487.19
  5. Step 5: Solve for x
    x = 250,487.19/548
  6. Step 6: Final answer
    x = 457.09

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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.