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Finding the Fourth Proportional to 236.42, 354.66 and 82.35

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Solution

The fourth proportional to 236.42, 354.66 and 82.35 is: 123.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.42 : 354.66 = 82.35 : x
  2. Step 2: Convert to fraction form
    236.42/354.66 = 82.35/x
  3. Step 3: Cross multiply
    236.42x = 354.66 × 82.35
  4. Step 4: Simplify right side
    236.42x = 29,206.25
  5. Step 5: Solve for x
    x = 29,206.25/236.42
  6. Step 6: Final answer
    x = 123.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.