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Finding the Fourth Proportional to 253.26, 377.19 and 239.22

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Solution

The fourth proportional to 253.26, 377.19 and 239.22 is: 356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.26 : 377.19 = 239.22 : x
  2. Step 2: Convert to fraction form
    253.26/377.19 = 239.22/x
  3. Step 3: Cross multiply
    253.26x = 377.19 × 239.22
  4. Step 4: Simplify right side
    253.26x = 90,231.39
  5. Step 5: Solve for x
    x = 90,231.39/253.26
  6. Step 6: Final answer
    x = 356.28

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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.