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Finding the Fourth Proportional to 315.09, 434.89 and 182.39

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Solution

The fourth proportional to 315.09, 434.89 and 182.39 is: 251.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.09 : 434.89 = 182.39 : x
  2. Step 2: Convert to fraction form
    315.09/434.89 = 182.39/x
  3. Step 3: Cross multiply
    315.09x = 434.89 × 182.39
  4. Step 4: Simplify right side
    315.09x = 79,319.59
  5. Step 5: Solve for x
    x = 79,319.59/315.09
  6. Step 6: Final answer
    x = 251.74

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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.