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Finding the Fourth Proportional to 397.61, 548.12 and 335.64

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Solution

The fourth proportional to 397.61, 548.12 and 335.64 is: 462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.61 : 548.12 = 335.64 : x
  2. Step 2: Convert to fraction form
    397.61/548.12 = 335.64/x
  3. Step 3: Cross multiply
    397.61x = 548.12 × 335.64
  4. Step 4: Simplify right side
    397.61x = 183,972.00
  5. Step 5: Solve for x
    x = 183,972.00/397.61
  6. Step 6: Final answer
    x = 462.70

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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.