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Finding the Fourth Proportional to 319.53, 440.97 and 188.56

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Solution

The fourth proportional to 319.53, 440.97 and 188.56 is: 260.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.53 : 440.97 = 188.56 : x
  2. Step 2: Convert to fraction form
    319.53/440.97 = 188.56/x
  3. Step 3: Cross multiply
    319.53x = 440.97 × 188.56
  4. Step 4: Simplify right side
    319.53x = 83,149.30
  5. Step 5: Solve for x
    x = 83,149.30/319.53
  6. Step 6: Final answer
    x = 260.22

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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.