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Finding the Fourth Proportional to 353.35, 486.85 and 236.71

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Solution

The fourth proportional to 353.35, 486.85 and 236.71 is: 326.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.35 : 486.85 = 236.71 : x
  2. Step 2: Convert to fraction form
    353.35/486.85 = 236.71/x
  3. Step 3: Cross multiply
    353.35x = 486.85 × 236.71
  4. Step 4: Simplify right side
    353.35x = 115,242.26
  5. Step 5: Solve for x
    x = 115,242.26/353.35
  6. Step 6: Final answer
    x = 326.14

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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.