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Finding the Fourth Proportional to 397.84, 548.04 and 332.32

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Solution

The fourth proportional to 397.84, 548.04 and 332.32 is: 457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.84 : 548.04 = 332.32 : x
  2. Step 2: Convert to fraction form
    397.84/548.04 = 332.32/x
  3. Step 3: Cross multiply
    397.84x = 548.04 × 332.32
  4. Step 4: Simplify right side
    397.84x = 182,124.65
  5. Step 5: Solve for x
    x = 182,124.65/397.84
  6. Step 6: Final answer
    x = 457.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.