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Finding the Fourth Proportional to 229.59, 342.99 and 190.85

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Solution

The fourth proportional to 229.59, 342.99 and 190.85 is: 285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.59 : 342.99 = 190.85 : x
  2. Step 2: Convert to fraction form
    229.59/342.99 = 190.85/x
  3. Step 3: Cross multiply
    229.59x = 342.99 × 190.85
  4. Step 4: Simplify right side
    229.59x = 65,457.93
  5. Step 5: Solve for x
    x = 65,457.93/229.59
  6. Step 6: Final answer
    x = 285.11

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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.