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Finding the Fourth Proportional to 316.03, 436.12 and 185.05

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Solution

The fourth proportional to 316.03, 436.12 and 185.05 is: 255.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.03 : 436.12 = 185.05 : x
  2. Step 2: Convert to fraction form
    316.03/436.12 = 185.05/x
  3. Step 3: Cross multiply
    316.03x = 436.12 × 185.05
  4. Step 4: Simplify right side
    316.03x = 80,704.01
  5. Step 5: Solve for x
    x = 80,704.01/316.03
  6. Step 6: Final answer
    x = 255.37

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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.