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Finding the Fourth Proportional to 262.35, 391.70 and 236.43

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Solution

The fourth proportional to 262.35, 391.70 and 236.43 is: 353.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.35 : 391.70 = 236.43 : x
  2. Step 2: Convert to fraction form
    262.35/391.70 = 236.43/x
  3. Step 3: Cross multiply
    262.35x = 391.70 × 236.43
  4. Step 4: Simplify right side
    262.35x = 92,608.45
  5. Step 5: Solve for x
    x = 92,608.45/262.35
  6. Step 6: Final answer
    x = 353.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.