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Finding the Fourth Proportional to 316.54, 436.71 and 185.47

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Solution

The fourth proportional to 316.54, 436.71 and 185.47 is: 255.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.54 : 436.71 = 185.47 : x
  2. Step 2: Convert to fraction form
    316.54/436.71 = 185.47/x
  3. Step 3: Cross multiply
    316.54x = 436.71 × 185.47
  4. Step 4: Simplify right side
    316.54x = 80,996.60
  5. Step 5: Solve for x
    x = 80,996.60/316.54
  6. Step 6: Final answer
    x = 255.88

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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.