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Finding the Fourth Proportional to 352.22, 484.92 and 306.20

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Solution

The fourth proportional to 352.22, 484.92 and 306.20 is: 421.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.22 : 484.92 = 306.20 : x
  2. Step 2: Convert to fraction form
    352.22/484.92 = 306.20/x
  3. Step 3: Cross multiply
    352.22x = 484.92 × 306.20
  4. Step 4: Simplify right side
    352.22x = 148,482.50
  5. Step 5: Solve for x
    x = 148,482.50/352.22
  6. Step 6: Final answer
    x = 421.56

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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.