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Finding the Fourth Proportional to 314.67, 434.37 and 190.43

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Solution

The fourth proportional to 314.67, 434.37 and 190.43 is: 262.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.67 : 434.37 = 190.43 : x
  2. Step 2: Convert to fraction form
    314.67/434.37 = 190.43/x
  3. Step 3: Cross multiply
    314.67x = 434.37 × 190.43
  4. Step 4: Simplify right side
    314.67x = 82,717.08
  5. Step 5: Solve for x
    x = 82,717.08/314.67
  6. Step 6: Final answer
    x = 262.87

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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.