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Finding the Fourth Proportional to 357.87, 493.91 and 218.04

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Solution

The fourth proportional to 357.87, 493.91 and 218.04 is: 300.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.87 : 493.91 = 218.04 : x
  2. Step 2: Convert to fraction form
    357.87/493.91 = 218.04/x
  3. Step 3: Cross multiply
    357.87x = 493.91 × 218.04
  4. Step 4: Simplify right side
    357.87x = 107,692.14
  5. Step 5: Solve for x
    x = 107,692.14/357.87
  6. Step 6: Final answer
    x = 300.93

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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.