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Finding the Fourth Proportional to 546.90, 754.74 and 298.21

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Solution

The fourth proportional to 546.90, 754.74 and 298.21 is: 411.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.90 : 754.74 = 298.21 : x
  2. Step 2: Convert to fraction form
    546.90/754.74 = 298.21/x
  3. Step 3: Cross multiply
    546.90x = 754.74 × 298.21
  4. Step 4: Simplify right side
    546.90x = 225,069.13
  5. Step 5: Solve for x
    x = 225,069.13/546.90
  6. Step 6: Final answer
    x = 411.54

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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.