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Finding the Fourth Proportional to 236.23, 354.66 and 189.99

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Solution

The fourth proportional to 236.23, 354.66 and 189.99 is: 285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.23 : 354.66 = 189.99 : x
  2. Step 2: Convert to fraction form
    236.23/354.66 = 189.99/x
  3. Step 3: Cross multiply
    236.23x = 354.66 × 189.99
  4. Step 4: Simplify right side
    236.23x = 67,381.85
  5. Step 5: Solve for x
    x = 67,381.85/236.23
  6. Step 6: Final answer
    x = 285.24

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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.