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Finding the Fourth Proportional to 446.60, 615.58 and 353.18

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Solution

The fourth proportional to 446.60, 615.58 and 353.18 is: 486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.60 : 615.58 = 353.18 : x
  2. Step 2: Convert to fraction form
    446.60/615.58 = 353.18/x
  3. Step 3: Cross multiply
    446.60x = 615.58 × 353.18
  4. Step 4: Simplify right side
    446.60x = 217,410.54
  5. Step 5: Solve for x
    x = 217,410.54/446.60
  6. Step 6: Final answer
    x = 486.81

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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.