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Finding the Fourth Proportional to 397.33, 549.56 and 376.83

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Solution

The fourth proportional to 397.33, 549.56 and 376.83 is: 521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.33 : 549.56 = 376.83 : x
  2. Step 2: Convert to fraction form
    397.33/549.56 = 376.83/x
  3. Step 3: Cross multiply
    397.33x = 549.56 × 376.83
  4. Step 4: Simplify right side
    397.33x = 207,091.64
  5. Step 5: Solve for x
    x = 207,091.64/397.33
  6. Step 6: Final answer
    x = 521.21

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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.