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Finding the Fourth Proportional to 546.62, 820.11 and 258.26

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Solution

The fourth proportional to 546.62, 820.11 and 258.26 is: 387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.62 : 820.11 = 258.26 : x
  2. Step 2: Convert to fraction form
    546.62/820.11 = 258.26/x
  3. Step 3: Cross multiply
    546.62x = 820.11 × 258.26
  4. Step 4: Simplify right side
    546.62x = 211,801.61
  5. Step 5: Solve for x
    x = 211,801.61/546.62
  6. Step 6: Final answer
    x = 387.48

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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.