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Finding the Fourth Proportional to 357.13, 492.82 and 226.18

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Solution

The fourth proportional to 357.13, 492.82 and 226.18 is: 312.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.13 : 492.82 = 226.18 : x
  2. Step 2: Convert to fraction form
    357.13/492.82 = 226.18/x
  3. Step 3: Cross multiply
    357.13x = 492.82 × 226.18
  4. Step 4: Simplify right side
    357.13x = 111,467.54
  5. Step 5: Solve for x
    x = 111,467.54/357.13
  6. Step 6: Final answer
    x = 312.12

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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.