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Finding the Fourth Proportional to 250.71, 374.25 and 239.47

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Solution

The fourth proportional to 250.71, 374.25 and 239.47 is: 357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.71 : 374.25 = 239.47 : x
  2. Step 2: Convert to fraction form
    250.71/374.25 = 239.47/x
  3. Step 3: Cross multiply
    250.71x = 374.25 × 239.47
  4. Step 4: Simplify right side
    250.71x = 89,620.45
  5. Step 5: Solve for x
    x = 89,620.45/250.71
  6. Step 6: Final answer
    x = 357.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.