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Finding the Fourth Proportional to 357.41, 493.19 and 217.54

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Solution

The fourth proportional to 357.41, 493.19 and 217.54 is: 300.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.41 : 493.19 = 217.54 : x
  2. Step 2: Convert to fraction form
    357.41/493.19 = 217.54/x
  3. Step 3: Cross multiply
    357.41x = 493.19 × 217.54
  4. Step 4: Simplify right side
    357.41x = 107,286.12
  5. Step 5: Solve for x
    x = 107,286.12/357.41
  6. Step 6: Final answer
    x = 300.17

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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.