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Finding the Fourth Proportional to 546.16, 818.88 and 221.14

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Solution

The fourth proportional to 546.16, 818.88 and 221.14 is: 331.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.16 : 818.88 = 221.14 : x
  2. Step 2: Convert to fraction form
    546.16/818.88 = 221.14/x
  3. Step 3: Cross multiply
    546.16x = 818.88 × 221.14
  4. Step 4: Simplify right side
    546.16x = 181,087.12
  5. Step 5: Solve for x
    x = 181,087.12/546.16
  6. Step 6: Final answer
    x = 331.56

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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.