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Finding the Fourth Proportional to 239.93, 331.25 and 190.65

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Solution

The fourth proportional to 239.93, 331.25 and 190.65 is: 263.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.93 : 331.25 = 190.65 : x
  2. Step 2: Convert to fraction form
    239.93/331.25 = 190.65/x
  3. Step 3: Cross multiply
    239.93x = 331.25 × 190.65
  4. Step 4: Simplify right side
    239.93x = 63,152.81
  5. Step 5: Solve for x
    x = 63,152.81/239.93
  6. Step 6: Final answer
    x = 263.21

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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.