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Finding the Fourth Proportional to 546.60, 753.96 and 422.28

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Solution

The fourth proportional to 546.60, 753.96 and 422.28 is: 582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.60 : 753.96 = 422.28 : x
  2. Step 2: Convert to fraction form
    546.60/753.96 = 422.28/x
  3. Step 3: Cross multiply
    546.60x = 753.96 × 422.28
  4. Step 4: Simplify right side
    546.60x = 318,382.23
  5. Step 5: Solve for x
    x = 318,382.23/546.60
  6. Step 6: Final answer
    x = 582.48

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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.