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Finding the Fourth Proportional to 546.92, 818.80 and 490.58

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Solution

The fourth proportional to 546.92, 818.80 and 490.58 is: 734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.92 : 818.80 = 490.58 : x
  2. Step 2: Convert to fraction form
    546.92/818.80 = 490.58/x
  3. Step 3: Cross multiply
    546.92x = 818.80 × 490.58
  4. Step 4: Simplify right side
    546.92x = 401,684.45
  5. Step 5: Solve for x
    x = 401,684.45/546.92
  6. Step 6: Final answer
    x = 734.45

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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.