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Finding the Fourth Proportional to 315.97, 436.13 and 185.03

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Solution

The fourth proportional to 315.97, 436.13 and 185.03 is: 255.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.97 : 436.13 = 185.03 : x
  2. Step 2: Convert to fraction form
    315.97/436.13 = 185.03/x
  3. Step 3: Cross multiply
    315.97x = 436.13 × 185.03
  4. Step 4: Simplify right side
    315.97x = 80,697.13
  5. Step 5: Solve for x
    x = 80,697.13/315.97
  6. Step 6: Final answer
    x = 255.39

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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.