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Finding the Fourth Proportional to 314.78, 434.39 and 182.05

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Solution

The fourth proportional to 314.78, 434.39 and 182.05 is: 251.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.78 : 434.39 = 182.05 : x
  2. Step 2: Convert to fraction form
    314.78/434.39 = 182.05/x
  3. Step 3: Cross multiply
    314.78x = 434.39 × 182.05
  4. Step 4: Simplify right side
    314.78x = 79,078.70
  5. Step 5: Solve for x
    x = 79,078.70/314.78
  6. Step 6: Final answer
    x = 251.22

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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.